A diesel engine exhaust pipe structure

Abstract

The utility model relates to diesel engine exhaust pipe technical field provides a diesel engine exhaust pipe structure, including exhaust pipe body and reinforcing rib, the one side of exhaust pipe body evenly fixed with reinforcing rib, the inside of exhaust pipe body is provided with the protection structure, the one end of exhaust pipe body is fixed with the air inlet, the top of exhaust pipe body is fixed with the exhaust port, the one end fixed with sealing structure of exhaust port. The utility model discloses through being provided with sealing structure, under the effect of placing groove, it is convenient to install sealing washer, and the exhaust pipe body is connected with other components through flange plate, under the effect of sealing washer, can fill the connecting gap, prevents the exhaust leakage, through the inside setting of sealing washer has the cavity, under the effect of cavity, make sealing washer more easily be compressed when flange plate fastening, can better fill the tiny gap of connecting surface.

Description

Technical Field

[0001] This utility model relates to the field of diesel engine exhaust pipe technology, and in particular to a diesel engine exhaust pipe structure. Background Technology

[0002] The diesel engine exhaust pipe is a key component of the diesel engine exhaust system, mainly responsible for expelling the exhaust gases after combustion from the engine to the outside. Therefore, a diesel engine exhaust pipe structure is used. To address this, patent CN217029074U discloses a diesel engine exhaust pipe structure, including an exhaust pipe body integrally formed with a corrugated pipe body, and an integrally formed bent pipe body. A heat insulation cover is mounted on the bent pipe, comprising a first bent cover and a second bent cover covering both sides of the bent pipe. The diesel engine exhaust pipe structure also includes a suspension mounting component. The suspension mounting component includes a mounting ball, with suspension hinges hinged to both sides of the mounting ball. A first locking member and a second locking member are hinged to the suspension hinges. The first locking member locks the corrugated pipe body, and the second locking member locks the heat insulation cover. A suspension screw is threaded onto the mounting ball. By using the above-mentioned device and component design to install the aforementioned pipe in a diesel engine, the technical defect of the entire pipe easily deforming or even breaking under severe vibrations during use can be effectively avoided. While the diesel engine exhaust pipe structure described above can effectively avoid the technical defect that the entire pipe is prone to deformation or even breakage under severe shaking during use, its applicability is low because it is inconvenient to improve the sealing effect and prevent exhaust gas leakage. Utility Model Content

[0003] The purpose of this invention is to provide a diesel engine exhaust pipe structure to solve the defect that existing diesel engine exhaust pipe structures are inconvenient to improve the sealing effect.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a diesel engine exhaust pipe structure, including an exhaust pipe body and reinforcing ribs; The exhaust pipe body has reinforcing ribs evenly fixed on one side, a protective structure is provided on the inner side of the exhaust pipe body, an air inlet is fixed at one end of the exhaust pipe body, and an exhaust outlet is fixed at the top end of the exhaust pipe body. A sealing structure is fixed at one end of the exhaust port; The sealing structure includes a flange fixed to one end of the exhaust port, and a placement groove is provided on one side of the flange, with a sealing ring disposed inside the placement groove.

[0005] Preferably, the reinforcing ribs are evenly distributed on one side of the exhaust pipe body, and the top of the reinforcing ribs extends to the outer side of the exhaust port. The evenly spaced reinforcing ribs enhance the structural strength of the exhaust pipe body, disperse the stress caused by exhaust gas flow and vibration, and prevent the exhaust pipe body from deforming or cracking due to pressure, thereby extending its service life.

[0006] Preferably, one side of the sealing ring extends to the outside of the flange, and the sealing ring and the flange form an engaging structure through a placement groove. The placement groove facilitates the installation of the sealing ring, and the flange enables the exhaust pipe body to connect with other components. The sealing ring also fills any gaps in the connection, preventing exhaust gas leakage.

[0007] Preferably, the sealing ring has an internal cavity. This cavity allows the sealing ring to be more easily compressed when the flange is tightened, thus better filling the tiny gaps at the connection surface.

[0008] Preferably, the protective structure includes a connecting layer, a heat-resistant layer, and a protective film. The connecting layer is fixed to the inner side of the exhaust pipe body, the heat-resistant layer is disposed inside the connecting layer, and the protective film is disposed inside the heat-resistant layer.

[0009] Preferably, the heat-resistant layer is actually a ceramic-based heat-insulating coating. The connecting layer provides strong mechanical bonding, ensuring the heat-resistant layer is firmly attached to the inside of the exhaust pipe body, preventing it from falling off. Under the action of the heat-resistant layer, it can prevent the high temperature of the exhaust pipe body from being transmitted to surrounding components.

[0010] Preferably, the protective film is actually a thin film of aluminum. To achieve optimal heat insulation and thermal shock resistance, the heat-resistant layer typically has a porous, microcracked layered structure. Under the action of the protective film, these pores are effectively sealed, acting as a chemical barrier against penetration, further reflecting heat and enhancing the heat insulation effect. It also has good corrosion resistance, extending the service life of the exhaust pipe body.

[0011] The diesel engine exhaust pipe structure provided by this utility model has the following advantages: With a sealing structure, the sealing ring is easy to install through the placement groove. The exhaust pipe body is connected to other components through the flange. The sealing ring can fill the connection gap and prevent exhaust gas leakage. Furthermore, the sealing ring has an internal cavity, which makes it easier to compress when the flange is tightened, thus better filling the tiny gaps on the connection surface. By incorporating a protective structure and providing strong mechanical bonding through a connecting layer, the heat-resistant layer is ensured to adhere firmly to the inner side of the exhaust pipe body, preventing it from falling off. Under the action of the heat-resistant layer, the high temperature of the exhaust pipe body can be blocked from being transferred to surrounding components. In order to obtain the best heat insulation and thermal shock resistance performance, the heat-resistant layer usually has a porous, micro-cracked layered structure. Under the action of the protective film, these pores can be effectively sealed, acting as a chemical barrier against penetration, further reflecting heat and enhancing the heat insulation effect. At the same time, it has good corrosion resistance and can extend the service life of the exhaust pipe body. By incorporating reinforcing ribs that extend to the outer side of the exhaust port, the structural strength of the exhaust pipe is enhanced through the presence of equally spaced reinforcing ribs. This disperses the stress caused by exhaust gas flow and vibration, preventing the exhaust pipe from deforming or cracking due to pressure, thereby extending its service life. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a three-dimensional structural schematic diagram of the main cross-section of this utility model; Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a three-dimensional exploded cross-sectional view of the sealing structure of this utility model. Figure 5 This is a side view cross-sectional three-dimensional structural schematic diagram of the present invention.

[0013] The following are the annotations in the figure: 1. Exhaust pipe body; 2. Reinforcing rib; 3. Air inlet; 4. Exhaust outlet; 5. Sealing structure; 51. Flange; 52. Sealing ring; 53. Placement groove; 6. Protective structure; 61. Connecting layer; 62. Heat-resistant layer; 63. Protective membrane. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figures 1-5The present invention provides a diesel engine exhaust pipe structure, including an exhaust pipe body 1 and reinforcing ribs 2. The reinforcing ribs 2 are uniformly fixed on one side of the exhaust pipe body 1. A protective structure 6 is provided on the inner side of the exhaust pipe body 1. The protective structure 6 includes a connecting layer 61, a heat-resistant layer 62 and a protective film 63. The connecting layer 61 is fixed to the inner side of the exhaust pipe body 1. The heat-resistant layer 62 is provided inside the connecting layer 61. The protective film 63 is provided inside the heat-resistant layer 62. The heat-resistant layer 62 is actually a ceramic-based heat-insulating coating. The protective film 63 is actually a thin film of aluminum. The reinforcing ribs 2 are evenly distributed on one side of the exhaust pipe body 1. The top of the reinforcing ribs 2 extends to the outer side of the exhaust port 4.

[0016] Reference Figure 2 and Figure 3 As shown, the connecting layer 61 provides a strong mechanical bond, ensuring that the heat-resistant layer 62 is firmly attached to the inner side of the exhaust pipe body 1, preventing it from falling off. Under the action of the heat-resistant layer 62, the high temperature of the exhaust pipe body 1 can be blocked from being transferred to surrounding components. In order to obtain the best heat insulation and thermal shock resistance performance, the heat-resistant layer 62 usually has a porous, micro-cracked layered structure. Under the action of the protective film 63, these pores can be effectively sealed, acting as a chemical barrier against penetration, further reflecting heat and enhancing the heat insulation effect. At the same time, it has good corrosion resistance, which can extend the service life of the exhaust pipe body 1. The top of the reinforcing rib 2 extends to the outside of the exhaust port 4. Under the action of the equally spaced reinforcing rib 2, the structural strength of the exhaust pipe body 1 can be enhanced, the stress caused by exhaust gas flow and vibration can be dispersed, and the exhaust pipe body 1 can be prevented from deforming or cracking due to pressure, thereby extending its service life.

[0017] An air inlet 3 is fixed at one end of the exhaust pipe body 1, and an exhaust port 4 is fixed at the top end of the exhaust pipe body 1. A sealing structure 5 is fixed at one end of the exhaust port 4. The sealing structure 5 includes a flange 51 fixed to one end of the exhaust port 4. A placement groove 53 is provided on one side inside the flange 51. A sealing ring 52 is provided inside the placement groove 53. One side of the sealing ring 52 extends to the outside of the flange 51. The sealing ring 52 and the flange 51 form a locking structure through the placement groove 53. A cavity is provided inside the sealing ring 52.

[0018] Reference Figure 2 , Figure 3 and Figure 4 As shown, the placement groove 53 facilitates the installation of the sealing ring 52. The exhaust pipe body 1 is connected to other components through the flange 51. The sealing ring 52 can fill the connection gap and prevent exhaust gas leakage. The sealing ring 52 has a cavity inside. Under the action of the cavity, the sealing ring 52 is more easily compressed when the flange 51 is tightened, which can better fill the tiny gaps on the connection surface.

[0019] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A diesel engine exhaust pipe structure, comprising an exhaust pipe body (1) and reinforcing ribs (2); Its features are: A reinforcing rib (2) is evenly fixed on one side of the exhaust pipe body (1), a protective structure (6) is provided on the inner side of the exhaust pipe body (1), an air inlet (3) is fixed at one end of the exhaust pipe body (1), and an exhaust outlet (4) is fixed at the top end of the exhaust pipe body (1). A sealing structure (5) is fixed at one end of the exhaust port (4); The sealing structure (5) includes a flange (51) fixed to one end of the exhaust port (4), and a placement groove (53) is provided on one side inside the flange (51), and a sealing ring (52) is provided inside the placement groove (53).

2. The diesel engine exhaust pipe structure according to claim 1, characterized in that: The reinforcing ribs (2) are evenly distributed on one side of the exhaust pipe body (1), and the top of the reinforcing ribs (2) extends to the outside of the exhaust port (4).

3. The diesel engine exhaust pipe structure according to claim 1, characterized in that: One side of the sealing ring (52) extends to the outside of the flange (51), and the sealing ring (52) and the flange (51) form an engaging structure through the placement groove (53).

4. The diesel engine exhaust pipe structure according to claim 1, characterized in that: The sealing ring (52) has a cavity inside.

5. The diesel engine exhaust pipe structure according to claim 1, characterized in that: The protective structure (6) includes a connecting layer (61), a heat-resistant layer (62) and a protective film (63). The connecting layer (61) is fixed to the inside of the exhaust pipe body (1). The heat-resistant layer (62) is provided inside the connecting layer (61), and the protective film (63) is provided inside the heat-resistant layer (62).

6. The diesel engine exhaust pipe structure according to claim 5, characterized in that: The heat-resistant layer (62) is actually a ceramic-based heat-insulating coating.

7. The diesel engine exhaust pipe structure according to claim 5, characterized in that: The protective film (63) is actually a thin film of aluminum.

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