Sealing gasket for exhaust pipe of large diesel engine

Abstract

The sealing gasket for the exhaust pipe of the large diesel engine comprises an annular gasket body and a corrosion-resistant outer wrapping layer, the outer wrapping layer is of a hollow annular structure, the annular gasket body is located in a hollow inner cavity of the outer wrapping layer, and the annular gasket body is attached and wrapped in the outer wrapping layer through the outer wrapping layer to be combined into a whole. According to the sealing gasket, the combined design concept is adopted, the annular gasket is attached and wrapped in the hollow inner cavity in the annular gasket through the outer wrapping layer, the annular gasket and the hollow inner cavity are combined into a whole, the outer wrapping layer has good corrosion resistance, the corrosion resistance of the sealing gasket is greatly improved, the service life of the sealing gasket is greatly prolonged, and the problem that an exhaust pipe leaks smoke due to damage of a traditional gasket is solved; the sealing gasket has good sealing performance and compression resilience, the overall strength of the sealing gasket is greatly improved compared with that of a common gasket, the sealing gasket has the long service life under high-temperature and high-pressure gas washing, the sealing effect between exhaust pipe sections of a diesel engine is improved, and the smoke leakage situation of the exhaust pipe sections is greatly reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of sealing gaskets, and in particular relates to a sealing gasket for an exhaust pipe of a large diesel engine. Background Art

[0002] Diesel engines are widely used in various fields due to their good economic performance, small size, light weight, good maneuverability, high reliability, long service life, and wide power range. Smoke leakage from diesel engine exhaust pipes has always been a common problem for most diesel engines. If there is a long-term smoke leakage in the diesel engine exhaust pipe, a large amount of tar will accumulate at the leaking point, posing a hidden danger to the safe operation of the diesel engine. Long-term high-load operation of the diesel engine poses a risk of fire. In addition, exhaust pipe smoke leakage can also cause cabin contamination. Therefore, an exhaust pipe gasket with good sealing performance has a certain impact on the use of diesel engines, which can improve the safety of diesel engine operation and the cabin environment.

[0003] Currently, commonly used exhaust pipe gaskets are either single flexible graphite gaskets or gaskets with stainless steel edging. Because the high-temperature, corrosive gas flowing through the exhaust pipe significantly impacts the gasket at high speed, these two types of gaskets have a short service life and fail to meet user requirements. After a diesel engine has been running for a while, the gasket is prone to damage, ultimately leading to exhaust smoke leakage. Therefore, addressing these issues necessitates improved gaskets. Utility Model Content

[0004] The technical problem solved by the utility model is to provide a sealing gasket for the exhaust pipe of a large diesel engine. The utility model adopts a modular design concept, and the outer layer wraps the annular gasket in its internal hollow cavity and combines it into a whole. The outer layer has good corrosion resistance, which greatly improves the corrosion resistance and service life of the sealing gasket, solves the problem of exhaust pipe smoke leakage caused by damage to traditional gaskets, has good sealing performance and compression rebound resilience, and the overall strength is greatly improved than that of ordinary gaskets, so that it has a longer service life under high-temperature and high-pressure gas flushing, improves the sealing effect between the exhaust pipe sections of the diesel engine, and greatly reduces the smoke leakage of the exhaust pipe sections.

[0005] The technical solution adopted by the utility model is: a sealing gasket for a large diesel engine exhaust pipe, comprising an annular gasket and a corrosion-resistant outer layer, wherein the outer layer is a hollow annular structure, and the annular gasket is located in the hollow inner cavity of the outer layer, and the outer layer fits and wraps the annular gasket inside the outer layer to form a whole.

[0006] The cross-section of the annular gasket on one side is a rectangular structure, and the cross-section of the outer layer on one side is a hollow rectangular ring structure.

[0007] Furthermore, the outer cladding is made of stainless steel.

[0008] Furthermore, the annular gasket is made of flexible graphite material.

[0009] Furthermore, a plurality of mounting holes punched through are evenly distributed on the circumference of the sealing gasket formed by the annular gasket and the outer covering.

[0010] The advantages of this utility model compared with the prior art are:

[0011] 1. This technical solution adopts a modular design concept. The outer layer wraps the annular gasket in its internal hollow cavity and combines it into a whole. The outer layer has good corrosion resistance, which greatly improves the corrosion resistance and service life of the sealing gasket, and solves the problem of exhaust pipe smoke leakage caused by damage to traditional gaskets;

[0012] 2. The outer layer made of stainless steel and the annular gasket made of flexible graphite in this technical solution both have good high temperature resistance, which makes the sealing gasket have good corrosion resistance and oxidation resistance in high temperature environments. In addition, the sealing gasket has good sealing performance and compression resilience, and its overall strength is greatly improved compared to ordinary gaskets.

[0013] 3. This technical solution has a simple structure and novel design, which enables it to have a long service life under high-temperature and high-pressure gas flushing, improves the sealing effect between the exhaust pipe sections of the diesel engine, and greatly reduces the smoke leakage of the exhaust pipe section. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the utility model;

[0015] Figure 2 for Figure 1 AA section view in;

[0016] Figure 3 for Figure 2 A partial enlarged schematic diagram of point B in the middle. DETAILED DESCRIPTION

[0017] The following is a combination of the embodiments of the present invention Figure 1-3 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0018] It should be noted that, in this document, unless otherwise stated, it should be understood that the terms "center," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate positions or relationships based on those shown in the accompanying drawings. These are intended only to facilitate the description of the present invention and simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] As used herein, the terms "comprises," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the elements.

[0020] Sealing gaskets for large diesel engine exhaust pipes, such as Figure 1-3 As shown, it includes an annular gasket 1 and a corrosion-resistant outer layer 2. The outer layer 2 is a hollow annular structure, and the annular gasket 1 is located in the hollow inner cavity of the outer layer 2. The outer layer 2 fits and wraps the annular gasket 1 inside the inner cavity to form a whole. In the above structure, a modular design concept is adopted. The outer layer 2 fits and wraps the annular gasket 1 in the inner hollow inner cavity to form a whole with a certain bonding strength. The outer layer 2 has good corrosion resistance, which greatly improves the corrosion resistance and service life of the sealing gasket and solves the problem of exhaust pipe smoke leakage caused by damage to traditional gaskets.

[0021] The annular gasket 1 has a rectangular cross-section on one side, and the outer layer 2 has a hollow rectangular ring-shaped cross-section on one side. Specifically, the outer layer 2 is made of stainless steel, specifically 316L stainless steel. Specifically, the annular gasket 1 is made of flexible graphite. In the above structure, the outer layer 2 made of stainless steel and the annular gasket 1 made of flexible graphite both have excellent high-temperature resistance, making the sealing gasket have excellent corrosion resistance and oxidation resistance in high-temperature environments. The sealing gasket also has excellent sealing performance and compression resilience, and its overall strength is greatly improved compared to ordinary gaskets.

[0022] In order to ensure that the sealing gasket is reliably installed in a high temperature environment, a plurality of mounting holes 3 punched through are evenly distributed on the circumference of the sealing gasket formed by the annular gasket 1 and the outer layer 2 .

[0023] This solution increases the service life of diesel engine exhaust pipe gaskets and the sealing effect between exhaust pipe sections, reduces the number of exhaust pipe gasket replacements and smoke leakage between pipe sections, and improves the safety of the diesel engine and the cabin environment; it has a simple structure and can ensure that the diesel engine has a good sealing effect between the exhaust pipe sections under long-term operation conditions, reducing smoke leakage, and can be promoted for use in other models.

[0024] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0025] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. Sealing gasket for large diesel engine exhaust pipe, characterized by: The invention comprises an annular gasket (1) and a corrosion-resistant outer cladding (2); the outer cladding (2) is in a hollow annular structure, the annular gasket (1) is located in the hollow inner cavity of the outer cladding (2), and the outer cladding (2) fits and wraps the annular gasket (1) inside the outer cladding to form a whole.

2. The sealing gasket for a large diesel engine exhaust pipe according to claim 1, characterized in that: The cross-section of the annular gasket (1) on one side is a rectangular structure, and the cross-section of the outer layer (2) on one side is a hollow rectangular ring structure.

3. The sealing gasket for a large diesel engine exhaust pipe according to claim 1, characterized in that: The outer cladding (2) is made of stainless steel.

4. The sealing gasket for a large diesel engine exhaust pipe according to claim 1, characterized in that: The annular gasket (1) is made of flexible graphite material.

5. The sealing gasket for a large diesel engine exhaust pipe according to any one of claims 1 to 4, characterized in that: The sealing gasket formed by the annular gasket (1) and the outer layer (2) is evenly distributed on the circumference thereof with a plurality of mounting holes (3) formed by punching through.

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