CN112031906A

CN112031906A - Exhaust tail pipe of hazardous chemical vehicle

Info

Publication number: CN112031906A
Application number: CN202010801977.9A
Authority: CN
Inventors: 沈贱民; 陈燕; 张仁新
Original assignee: Dongfeng Commercial Vehicle Co Ltd
Current assignee: Dongfeng Commercial Vehicle Co Ltd
Priority date: 2020-08-11
Filing date: 2020-08-11
Publication date: 2020-12-04
Anticipated expiration: 2040-08-11
Also published as: CN112031906B

Abstract

The application relates to a tail pipe of a hazardous chemical vehicle, which relates to the technical field of engine exhaust systems and comprises a tail pipe body, wherein the tail pipe body comprises an air inlet and an air outlet, and the air inlet is used for being connected with a post-processor; a guide surface connected to the exhaust port; the tail pipe has a use state in which the intake port is connected to the post-processor, the guide surface is inclined toward the ground so that the exhaust path of the exhaust gas discharged through the exhaust port is inclined toward the ground, and the intake pipe of the post-processor is outside the exhaust path. The problem that the length of the tail pipe is very long is solved, and the manufacturing cost of the whole vehicle is greatly increased; and the problem that the exhaust efficiency of the tail pipe is affected because the tail pipe needs to be bent at a plurality of positions in order to avoid interference with other structures at the front wall of the cab.

Description

Exhaust tail pipe of hazardous chemical vehicle

Technical Field

The application relates to the technical field of engine exhaust systems, in particular to a tail pipe of a hazardous chemical vehicle.

Background

At present, according to the regulations related to the technical conditions of motor vehicle operation safety, the installation of an exhaust pipe of a dangerous chemical vehicle is regulated, the exhaust pipe is arranged to avoid heating and igniting goods, the clear distance between the exhaust pipe and a fuel oil pipe is more than or equal to 200mm, an outlet of the exhaust pipe is arranged in the area which is not higher than the upper plane of a vehicle longitudinal beam and is in front of the front end surface of a tank body/a tank body, and a motor vehicle exhaust spark extinguisher which meets the regulations is installed.

In the related art, as shown in fig. 1 and 2, the engine is connected to the post-processor 2 through an intake pipe 20 of the post-processor 2, exhaust gas generated by the engine is discharged into the post-processor 2 through the intake pipe 20 of the post-processor 2, and the exhaust gas is treated by the post-processor 2 and then discharged through a tail pipe body 1 of a tail pipe. And in order to avoid the tail gas discharged from the exhaust port 11 of the tail pipe from being sprayed onto the intake pipe 20, the tail pipe of the hazardous chemical vehicle is generally arranged at the front wall of the cab, and the exhaust port 11 extends to the left front bumper of the front part of the vehicle so as to meet the requirements of the regulations.

Although the tail pipe is arranged according to the arrangement mode, the tail gas is prevented from being sprayed to the air inlet pipe 20, the length of the tail pipe is long, and the manufacturing cost of the whole vehicle is greatly increased; in addition, in order to avoid interference with other structures at the front wall of the cab, the tail pipe needs to be bent at multiple positions, and the exhaust efficiency of the tail pipe is affected.

Disclosure of Invention

The embodiment of the application provides a tail pipe of a hazardous chemical vehicle, which aims to solve the problems that the tail pipe is long in length in the related technology and the manufacturing cost of the whole vehicle is greatly increased; and the problem that the exhaust efficiency of the tail pipe is affected because the tail pipe needs to be bent at a plurality of positions in order to avoid interference with other structures at the front wall of the cab.

In a first aspect, a tail pipe for a hazardous chemical vehicle is provided, which includes:

the tail pipe body comprises an air inlet and an air outlet, and the air inlet is used for being connected with a post processor of the hazardous chemical vehicle;

a guide surface connected to the exhaust port;

the tail pipe has a use state in which the intake port is connected to the aftertreatment device, the guide surface is inclined toward the ground so that an exhaust path of exhaust gas discharged through the exhaust port is inclined toward the ground, and the intake pipe of the aftertreatment device is outside the exhaust path.

In some embodiments, the guide surface extends from a part of the end surface of the exhaust port to the center of the exhaust port in an inclined manner.

In some embodiments, a projection of the guide surface on the exhaust port end surface is at least partially located within the exhaust port.

In some embodiments, the guide surface is formed with a guide groove recessed inward in an axial direction of the guide surface.

In some embodiments, the guide slot is located at the center of the guide surface, such that the exhaust port is heart-shaped.

In some embodiments, the exhaust port is located below the intake pipe when in use.

In some embodiments, the front wheels and leaf springs of the hazardous chemical vehicle are outside of the exhaust path.

In some embodiments, the discharge path is at an angle of 30-60 degrees to the ground.

In some embodiments, the tailpipe body further includes an intake section, a spark arrester connected between the intake and exhaust sections, and the intake and exhaust ports are disposed on one end of the intake and exhaust sections.

In some embodiments, the central axis of the exhaust section is disposed in a steepest curve.

The beneficial effect that technical scheme that this application provided brought includes: the utility model provides a be connected with the guide surface on the gas vent, the guide surface inclines towards ground to make via the exhaust route slope of gas vent exhaust tail gas towards ground, and the exhaust route is not through the aftertreatment ware, therefore on gas vent exhaust tail gas can not blow the intake pipe, can not cause the influence to the intake pipe. The tail pipe body of this application installs and encloses department behind the driver's cabin right side, has shortened the length of tail pipe body greatly, greatly reduced whole car cost. And the tail pipe body does not need to be bent and led out to the front bumper for multiple times, so that the bending times of the tail pipe body are reduced, and the tail gas emission efficiency is improved.

The embodiment of the application provides a dangerization article car tail pipe, because when tail pipe is in the user state, the air inlet is connected with the aftertreatment ware, and the guide surface inclines towards ground to make via the exhaust route slope of exhaust of gas vent exhaust towards ground, and the intake pipe of aftertreatment ware is outside the exhaust route, therefore on the exhaust tail gas of gas vent can not blow the intake pipe, can not cause the influence to the intake pipe. Therefore, when the tail pipe body of the embodiment of the application is installed, only the guide surface is inclined towards the ground, the tail gas is guaranteed not to blow into the gas pipe, the tail pipe body can be installed at the rear side of the cab, the tail pipe body of the front wall of the cab is installed in contrast, the length of the tail pipe body of the embodiment of the application is greatly shortened, and the cost of the whole vehicle is greatly reduced. And the tail pipe body does not need to be bent and led out to the front bumper for multiple times, so that the bending times of the tail pipe body are reduced, and the tail gas emission efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a front view of a tail pipe in a related art in use;

FIG. 2 is a top view of a related art tailpipe in use;

FIG. 3 is a front view of a tail pipe in use according to an embodiment of the present application;

FIG. 4 is a top view of a tailpipe in use according to an embodiment of the present application;

FIG. 5 is a rear view of the tail pipe in use according to an embodiment of the present application;

FIG. 6 is a right side view of FIG. 5;

FIG. 7 is a schematic structural diagram of a guide surface in an embodiment of the present application;

FIG. 8 is a schematic structural view of a tailpipe body according to an embodiment of the present application;

FIG. 9 is a right side view of FIG. 8;

fig. 10 is a schematic structural view of a spark arrester in an embodiment of the present application.

In the figure: 1. a tail pipe body; 10. an air inlet; 11. an exhaust port; 12. a guide surface; 13. a guide groove; 14. an air intake section; 15. a spark arrester; 150. an outer housing; 151. a screen separator; 152. an adjustment mechanism; 1520. adjusting the bracket; 1521. an arc-shaped slot; 1522. an adjusting handle; 1523. a spacing pin; 153. a rotation pin; 16. an exhaust section; 17. a heat shield; 2. a post-processor; 20. an air inlet pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 3-5, fig. 3, fig. 4 and fig. 5 are a front view, a plan view and a rear view of a tail pipe in a use state in the embodiment of the present application, respectively, where a vehicle head of the hazardous chemical substance vehicle faces to the right, an image of the tail pipe is projected on a projection surface behind the vehicle when viewed from the front of the hazardous chemical substance vehicle, and the formed projection image is the front view. The embodiment of the application provides a dangerization article car tail pipe, and it includes tail pipe body 1, and tail pipe body 1 includes air inlet 10 and gas vent 11, and air inlet 10 is used for being connected with the aftertreatment ware 2 of dangerization article car, and the exhaust gas after aftertreatment ware 2 handles is discharged from gas vent 11. The tail pipe also comprises a guide surface 12, the guide surface 12 is connected to the exhaust port 11, the guide surface 12 is arranged on the exhaust port 11, the tail gas passing through the exhaust port 11 is guided, and the installation direction and the posture of the tail pipe body 1 can be adjusted according to actual requirements, so that the tail pipe body 1 is ensured to conform to the installation regulation of the tail pipe of the hazardous chemical vehicle. The tail pipe has a use state, when the tail pipe is in the use state, the tail pipe is installed on a hazardous chemical vehicle, the air inlet 10 is connected with the post processor 2, the guide surface 12 inclines towards the ground, so that the exhaust path of the tail gas exhausted from the exhaust port 11 inclines towards the ground, and the air inlet pipe 20 of the post processor 2 is arranged outside the exhaust path, therefore, the tail gas exhausted from the exhaust port 11 cannot blow to the air inlet pipe 20, and the air inlet pipe 20 cannot be influenced. Therefore, when the tail pipe body 1 of the embodiment of the application is installed, only the guide surface 12 is inclined towards the ground, the tail gas is guaranteed not to blow into the gas pipe 20, the tail pipe body 1 can be installed at the right rear wall of the cab, and compared with the tail pipe body 1 of the front wall of the cab in fig. 1 and fig. 2, the tail pipe body 1 of the embodiment of the application is short by about 2 meters, and the cost of the whole vehicle is greatly reduced. And the tail pipe body 1 does not need to be bent and led out to the front bumper for multiple times, so that the bending times of the tail pipe body 1 are reduced, and the tail gas emission efficiency is improved.

The working principle of the exhaust tail pipe of the hazardous chemical vehicle in the embodiment of the application is as follows:

the engine is communicated with the post-processor 2 through the air inlet pipe 20 of the post-processor 2, the exhaust gas generated by the engine is discharged into the post-processor 2 through the air inlet pipe 20 of the post-processor 2, and the exhaust gas is treated by the post-processor 2 and then is discharged through the exhaust port 11 of the tail pipe body 1. The last guide surface 12 that is connected with of gas vent 11 of this application embodiment, guide surface 12 slope towards ground to the exhaust route slope of the tail gas of making via gas vent 11 exhaust is towards ground, and the exhaust route does not pass through aftertreatment ware 2, therefore on gas vent 11 exhaust tail gas can not blow intake pipe 20, can not cause the influence to intake pipe 20. The tail pipe body 1 of the embodiment of the application is arranged at the rear wall of the right side of a cab, so that the length of the tail pipe body 1 is greatly shortened, and the cost of the whole vehicle is greatly reduced. And the tail pipe body 1 does not need to be bent and led out to the front bumper for multiple times, so that the bending times of the tail pipe body 1 are reduced, and the tail gas emission efficiency is improved.

Alternatively, as shown in fig. 7, the guide surface 12 is formed by extending a part of the end surface of the exhaust port 11 obliquely toward the center of the exhaust port 11. The guide surface 12 and the exhaust port 11 are integrally formed, and the guide surface 12 is a structure inclined toward the center of the exhaust port 11, rather than a structure turned outwards along the end surface of the exhaust port 11, so as to guide the exhaust gas exhausted through the exhaust port 11, and the exhaust gas exhausted from the exhaust port 11 is exhausted out of the exhaust port 11 along the inclined direction of the guide surface 12, so that the purpose of guiding the exhaust gas to be exhausted from the exhaust port 11 can be achieved by the inclination of the guide surface 12 toward the center of the exhaust port 11 in the embodiment of the application.

Preferably, the projection of the guide surface 12 on the end face of the exhaust port 11 is at least partially located within the exhaust port 11. Further, the guiding surface 12 of the embodiment of the present application is inclined toward the center of the exhaust port 11, and plays a role of guiding exhaust to be discharged along a discharge path inclined toward the ground, if the guiding surface 12 is too large, the projection exceeds the exhaust port 11, which may cause the exhaust to be directly blown to the ground vertically, and if the guiding surface 12 is too small, the exhaust may still be blown to the intake pipe 20 due to insufficient inclination.

Further, the guide surface 12 is formed with a guide groove 13 recessed inward in the axial direction of the guide surface 12. The guide groove 13 is formed by punching the guide surface 12, and the guide groove 13 can increase the inclination degree of exhaust emission, so that the exhaust is emitted towards the ground in an inclined way as much as possible.

Further, the guide groove 13 is located at the center of the guide surface 12 to make the exhaust port 11 heart-shaped. Compared with the single-stream exhaust at one time, the exhaust discharged from the exhaust port 11 of the embodiment of the present application is uniformly dispersed into two streams at the guide groove 13, so that the exhaust discharge rate is increased, and the two streams are both discharged obliquely and towards the ground under the guiding action of the guide surfaces 12 at both sides of the guide groove 13.

Alternatively, as shown in fig. 5 and 6, the exhaust port 11 is located below the intake pipe 20 when in the use state. The exhaust port 11 extends to the lower part of the air inlet pipe 20, so that the length of the exhaust port 11 is greatly shortened, and the exhaust gas exhausted from the exhaust port 11 is inclined towards the ground, so that the exhaust gas exhausted from the exhaust port 11 is basically not blown into the air inlet pipe 20.

Optionally, the front wheels and leaf springs of the hazardous chemical vehicle are outside the exhaust path. When the tail pipe body 1 is installed, the structures of the front wheel, the plate spring, the mudguard and the like are also considered, so that the exhaust path of the tail gas guided by the guide surface 12 does not pass through the structures of the front wheel, the plate spring, the mudguard and the like, other structures of the whole vehicle are not influenced, and relevant regulations are met.

Alternatively, as shown in FIG. 6, the discharge path may be at an angle θ of 30-60 degrees to the ground. The direct blowing of the tail gas to the ground is avoided, and the distance of the tail gas discharged to the ground is increased, so that the tail gas has time to dissipate in the process of being discharged until contacting the ground, and a blast of gas does not directly impact the ground.

Further, referring to fig. 8 and 9, the tail pipe body 1 further includes an intake section 14, a spark arrester 15, and an exhaust section 16, the spark arrester 15 being connected between the intake section 14 and the exhaust section 16, and the intake port 10 and the exhaust port 11 being provided at one ends of the intake section 14 and the exhaust section 16, respectively. The spark arrester 15 serves to prevent flames and sparks in the exhaust gas discharged from the intake section 14 from being ejected from the exhaust port 11, causing a safety accident.

Further, referring to fig. 8 and 9, the central axis of the exhaust section 16 is arranged in the steepest curve. The exhaust section 16 can exhaust the tail gas most quickly, and the tail gas emission efficiency is improved. And the tail gas exhausted from the exhaust port 11 is prevented from being attached to the air inlet pipe 20 as soon as the exhaust port 11 is exhausted in a dispersion mode, so that the tail gas exhausted from the exhaust port 11 can be exhausted towards the ground in an inclined mode as soon as possible, and the tail gas cannot be dispersed to the air inlet pipe 20 before reaching the ground.

Preferably, the tailpipe body 1 further includes a heat shield 17, the heat shield 17 covering the intake section 14 and the exhaust section 16. The heat shield 17 comprises a heat insulation steel foil, a heat insulation bandage and a heat insulation material which are connected in sequence. The heat insulation steel foil is connected with the air inlet section 14 and the air outlet section 16, the heat insulation steel foil is made of 304 stainless steel, the heat insulation binding band is made of glass fiber felt, and the heat insulation material is made of glass fiber felt. The heat shield 17 is fixed on the air inlet section 14 and the air outlet section 16 through heat insulation steel foil welding to play a role of heat insulation.

Further, referring to fig. 8 and 9, the spark arrester 15 includes an outer casing 150, a screen separator 151 and an adjusting mechanism 152, an airflow passage is formed in the outer casing 150 and penetrates through the outer casing 150, and two ends of the outer casing 150 are respectively communicated with the air inlet section 14 and the air outlet section 16; the screen separator 151 is rotatably coupled within the outer case 150; the adjusting mechanism 152 is connected to the screen partition 151 and is used for adjusting the rotation angle of the screen partition 151, so that the screen partition 151 opens and closes the airflow channel. When the air purifier is in use, the adjusting mechanism 152 rotates the filter screen partition 151, so that when the filter screen partition 151 is closed in an air flow channel, flame and sparks discharged from the air inlet section 14 can be prevented from being extinguished, the flame and the sparks are prevented from being ejected from the air outlet 11, and the spark extinguishing function is achieved. When the air conditioner is not in use, the adjusting mechanism 152 rotates the screen partition 151 to open the air flow path of the screen partition 151, thereby preventing the air from being discharged from the air outlet 11.

Further, referring to fig. 10, both ends of the screen separator 151 are connected to both ends of the outer case 150 by rotating pins 153, and both rotating pins 153 extend out of the outer case 150; the adjusting mechanism 152 comprises an adjusting bracket 1520, an adjusting handle 1522 and a limit pin 1523, one end of the adjusting bracket 1520 is connected with one of the rotating pins 153, and an arc-shaped groove 1521 is formed in the adjusting bracket 1520; the adjusting handle 1522 is connected with the adjusting bracket 1520 and is used for driving the adjusting bracket 1520 to rotate so as to drive the rotating pin 153 to rotate; one end of the limit pin 1523 passes through the arc-shaped slot 1521 and is connected with the outer housing 150 to limit the rotation angle of the adjusting bracket 1520. When the using state, through adjusting handle 1522 rotation regulation support 1520, it is rotatory to drive swivel pin 153 to make filter screen baffle 151 rotatory, and rotatory along the curve radian of arc wall 1521, so that filter screen baffle 151 closure is at airflow channel, can prevent to extinguish the flame and the spark of air inlet section 14 exhaust, prevents that flame and spark from following gas vent 11 blowout, thereby plays the effect of extinguishing the spark. When the filter screen is not in use, the adjusting handle 1522 rotates the adjusting bracket 1520 in the reverse direction to drive the rotating pin 153 to rotate in the reverse direction, so that the filter screen partition 151 rotates in the reverse direction to open the air flow channel, and the air exhaust of the air outlet 11 is not blocked.

In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a dangerous chemicals car tail pipe which characterized in that, it includes:

the tail pipe body (1) comprises an air inlet (10) and an air outlet (11), wherein the air inlet (10) is used for being connected with a post processor (2) of the hazardous chemical vehicle;

a guide surface (12) connected to the exhaust port (11);

the tail pipe has a use state in which the intake port (10) is connected to the aftertreatment device (2), the guide surface (12) is inclined toward the ground so that an exhaust path of exhaust gas discharged through the exhaust port (11) is inclined toward the ground, and an intake pipe (20) of the aftertreatment device (2) is outside the exhaust path.

2. A tail pipe for a hazardous chemical vehicle according to claim 1, wherein the guide surface (12) is formed by extending part of the end surface of the exhaust port (11) obliquely toward the center of the exhaust port (11).

3. A tail pipe for a hazardous chemical vehicle according to claim 2, characterized in that the projection of the guide surface (12) onto the end surface of the exhaust port (11) is at least partially located in the exhaust port (11).

4. A tail pipe for a hazardous chemical vehicle according to claim 2, wherein the guide surface (12) is formed with a guide groove (13) recessed inward in the axial direction of the guide surface (12).

5. A tail pipe for a hazardous chemical vehicle according to claim 4, characterized in that the guide groove (13) is located in the center of the guide surface (12) to make the exhaust port (11) heart-shaped.

6. A tail pipe for a hazardous chemical vehicle according to claim 1, wherein the exhaust port (11) is located below the intake pipe (20) when in use.

7. The hazardous chemical substance vehicle tail pipe of claim 1, wherein the front wheel and leaf spring of the hazardous chemical substance vehicle are outside the exhaust path.

8. The tail pipe of the hazardous chemical vehicle of claim 1, wherein the discharge path is at an angle of 30-60 degrees to the ground.

9. A tail pipe for a hazardous chemical vehicle according to claim 1, wherein the tail pipe body (1) further comprises an intake section (14), a spark arrester (15) and an exhaust section (16), the spark arrester (15) is connected between the intake section (14) and the exhaust section (16), and the intake port (10) and the exhaust port (11) are respectively provided at one end of the intake section (14) and the exhaust section (16).

10. The tail pipe of the hazardous chemical vehicle of claim 9, wherein the central axis of the exhaust section (16) is arranged in a steepest curve.