Exhaust manifold sealing ring structure for diesel engine
By using gasket and projecting ring structures at the exhaust manifold connection, the hot melt adhesive ring is used to fill the gap at high temperature, the problem of diesel engine sealing ring failure at high temperature is solved, and the stable sealing of the exhaust manifold is achieved sex.
Patent Information
- Application Number
- CN202420636781.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-03-29
AI Technical Summary
The exhaust manifold sealing ring in diesel engines is prone to failure under high temperature conditions, resulting in poor sealing properties, which may lead to high-temperature exhaust gas leakage and endanger driving and personal safety.
A sealing ring structure including a gasket and a projecting ring is designed. The projecting ring is arranged vertically on both sides of the gasket. The outer surface is equipped with an annular groove to install a hot melt adhesive ring, and the gasket and projecting ring bonding row are installed. At the angle of the gas manifold, the hot melt adhesive ring flows into the contact surface after heating to achieve sealing.
Effectively maintain the sealing of the exhaust manifold connection, prevent exhaust gas leakage, ensure that there are no gaps in long-term use, and ensure safety.
Smart Images
Figure CN222296343U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an exhaust manifold sealing ring structure for a diesel engine, belonging to the technical field of exhaust manifolds for diesel engines. Background Art
[0002] The exhaust manifold is a pipe connected to the engine cylinder block for exhaust gas. The exhaust gas from each cylinder is discharged into the exhaust manifold, and then concentrated to operate the turbocharger, and finally enters the exhaust gas treatment module. For diesel engines, sealing rings are indispensable in the exhaust manifold sealing structure. The exhaust manifold connection forms include plug-in exhaust manifolds, bolted exhaust manifolds, etc. A sealing ring structure is installed at the connection position. The sealing ring can increase the sealing performance of the connection position of the two exhaust manifolds to ensure the smooth passage of exhaust gas and avoid leakage. Since the exhaust gas discharged from the cylinder block is high-temperature exhaust gas, the strength of the sealing ring itself will be reduced under high temperature conditions, which may easily cause the sealing ring to fail, resulting in poor sealing performance at the connection position between the exhaust manifolds, which may lead to leakage of high-temperature exhaust gas, which may endanger driving and personal safety in severe cases. Summary of the invention
[0003] The technical problem to be solved by the utility model is to provide a sealing ring structure of an exhaust manifold for a diesel engine in view of the defects of the prior art, so as to ensure the sealing performance of the exhaust manifold connection.
[0004] To solve this technical problem, the utility model provides a diesel engine exhaust manifold sealing ring structure, comprising a gasket and a protruding ring, wherein the protruding ring is vertically arranged on both sides of the gasket, and the protruding ring and the gasket are provided with a coaxial inner cavity; the outer surface of the protruding ring is provided with an annular groove, and a hot melt adhesive ring is installed in the groove; the sealing ring structure is installed between the left exhaust manifold and the right exhaust manifold, and the gasket and the protruding ring fit the angle position of the left exhaust manifold and the right exhaust manifold, and when the exhaust gas flows between the protruding ring and the gasket, the hot melt adhesive ring is heated and then flows and fills the outer surface of the protruding ring and the inner surface of the left exhaust manifold and the right exhaust manifold to achieve sealing.
[0005] The gasket is also evenly provided with a plurality of through holes, which are distributed along the circumference of the gasket to facilitate the passage of bolts.
[0006] The groove is located at the center of the surface of the protruding ring, and the thickness of the groove is one third of the thickness of the protruding ring.
[0007] The connection position between the inner circle and the outer circle of the protruding ring away from the gasket is in an arc shape, which reduces the resistance of the exhaust gas flowing into the cylinder.
[0008] The outer surface of the hot melt adhesive ring is flush with the outer surface of the protruding ring, and is attached to the inner surfaces of the left exhaust manifold and the right exhaust manifold after installation.
[0009] The gasket and the protruding ring are an integrated structure.
[0010] Beneficial effects: The gasket and the protruding ring of the utility model form a folded edge, which can fit exactly on the end faces of the left exhaust manifold and the right exhaust manifold. The hot-melt adhesive ring can partially melt after being heated, and fill and stick the gaps on the contact surfaces of the gasket, the protruding ring and the left exhaust manifold and the right exhaust manifold, so that gaps are not easy to appear at the contact position of the left exhaust manifold and the right exhaust manifold with the utility model even after long-term use, and the sealing of the connection between the left exhaust manifold and the right exhaust manifold is always guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;
[0012] Figure 2 It is a three-dimensional structural schematic diagram of the gasket and the protruding ring of the utility model;
[0013] Figure 3 It is a structural schematic diagram of the gasket and the protruding ring of the utility model;
[0014] Figure 4 It is an assembly diagram of the utility model.
[0015] In the figure: 1, gasket; 2, protruding ring; 3, hot melt adhesive ring; 4, left exhaust manifold; 5, right exhaust manifold; 11, through hole; 21, groove. DETAILED DESCRIPTION
[0016] The utility model is described in detail below in conjunction with the accompanying drawings and embodiments.
[0017] like Figure 1-Figure 4 As shown, the utility model provides a diesel engine exhaust manifold sealing ring structure, comprising a gasket 1 and a protruding ring 2, wherein the protruding ring 2 is vertically arranged on both sides of the gasket 1, the protruding ring 2 and the gasket 1 are provided with a coaxial inner cavity, and the cylinder exhaust gas can pass through the middle inner cavity of the protruding ring 2 and the gasket 1; the outer surface of the protruding ring 2 is provided with an annular groove 21, and a circular hot melt adhesive ring 3 is installed in the groove 21; the sealing ring structure is installed between the left exhaust manifold 4 and the right exhaust manifold 5, and the gasket 1 and the protruding ring 2 fit the corner positions of the left exhaust manifold 4 and the right exhaust manifold 5. When the exhaust gas flows between the protruding ring 2 and the gasket 1, the hot melt adhesive ring 3 is made of hot melt adhesive. After the hot melt adhesive ring 3 is heated, the hot melt adhesive begins to melt gradually, flows and fills the outer surface of the protruding ring 2 and the inner surfaces of the left exhaust manifold 4 and the right exhaust manifold 5, so that it is not easy to have a gap between the outer surface of the protruding ring 2 and the inner surfaces of the left exhaust manifold 4 and the right exhaust manifold 5, so as to always ensure good sealing and achieve sealing.
[0018] The gasket 1 is also evenly provided with a plurality of through holes 11 , which are distributed along the circumference of the gasket 1 to facilitate the passing of bolts for installation.
[0019] The groove 21 is located at the center of the surface of the protruding ring 2 , and the thickness of the groove 21 is one third of the thickness of the protruding ring 2 .
[0020] The connection position between the inner circle and the outer circle of the protruding ring 2 at one end away from the gasket 1 is in an arc shape, which can reduce the resistance of the cylinder exhaust gas flowing into the protruding ring 2.
[0021] The outer surface of the hot melt adhesive ring 3 is flush with the outer surface of the protruding ring 2 , and is attached to the inner surfaces of the left exhaust manifold 4 and the right exhaust manifold 5 after installation.
[0022] The gasket 1 and the protruding ring 2 are an integrated structure.
[0023] The gasket and the protruding ring of the utility model form a folded edge, which can just fit on the end faces of the left exhaust manifold and the right exhaust manifold. The hot melt adhesive ring can be partially melted after being heated, so as to fill and adhere the gaps between the gasket, the protruding ring and the contact surfaces of the left exhaust manifold and the right exhaust manifold, so that the contact positions between the left exhaust manifold, the right exhaust manifold and the sealing ring structure are not prone to gaps even after long-term use, thereby always ensuring the sealing of the connection between the left exhaust manifold and the right exhaust manifold.
[0024] The above embodiments of the present invention are merely illustrative and not exclusive, and all modifications within the scope of the present invention or equivalent to the scope of the present invention are encompassed by the present invention.
Claims
1. A diesel engine exhaust manifold sealing ring structure, characterized in that: The invention comprises a gasket (1) and a protruding ring (2), wherein the protruding ring (2) is vertically arranged on both sides of the gasket (1), and the protruding ring (2) and the gasket (1) are provided with a coaxial inner cavity; the outer surface of the protruding ring (2) is provided with an annular groove (21), and a hot melt adhesive ring (3) is installed in the groove (21); the sealing ring structure is installed between the left exhaust manifold (4) and the right exhaust manifold (5), and the gasket (1) and the protruding ring (2) are attached to the angle position of the left exhaust manifold (4) and the right exhaust manifold (5). When the exhaust gas flows between the protruding ring (2) and the gasket (1), the hot melt adhesive ring (3) is heated and flows and fills the outer surface of the protruding ring (2) and the inner surface of the left exhaust manifold (4) and the right exhaust manifold (5) to achieve sealing.
2. The exhaust manifold sealing ring structure for a diesel engine according to claim 1, characterized in that: The gasket (1) is also evenly provided with a plurality of through holes (11), and the plurality of through holes (11) are distributed along the circumference of the gasket (1) to facilitate the passage of bolts.
3. The exhaust manifold sealing ring structure for a diesel engine according to claim 1, characterized in that: The groove (21) is located at the central position of the surface of the protruding ring (2), and the thickness of the groove (21) is one third of the thickness of the protruding ring (2).
4. The exhaust manifold sealing ring structure for a diesel engine according to claim 1, characterized in that: The connection position between the inner circle and the outer circle of the protruding ring (2) at one end away from the gasket (1) is in an arc shape, thereby reducing the resistance to the inflow of exhaust gas from the cylinder.
5. The exhaust manifold sealing ring structure for a diesel engine according to claim 1, characterized in that: The outer surface of the hot melt adhesive ring (3) is flush with the outer surface of the protruding ring (2), and after installation, it is attached to the inner surfaces of the left exhaust manifold (4) and the right exhaust manifold (5).
6. The exhaust manifold sealing ring structure for a diesel engine according to any one of claims 1 to 5, characterized in that: The gasket (1) and the protruding ring (2) are an integrated structure.