High-strength engine sealing gasket

Abstract

The utility model relates to a high-strength engine sealing gasket which comprises a core plate, the surface of the core plate is sleeved with a metal plate, the surface of the metal plate is sleeved with a base layer, the surface of the base layer is sleeved with a reinforcing layer, and the surface of the reinforcing layer is sleeved with a sealing layer. The core plate and the metal plate, the metal plate and the base layer, the base layer and the reinforcing layer, and the reinforcing layer and the sealing layer are fixedly connected through a high-temperature-resistant binder, so that the reliability and the sealing performance of the sealing gasket under complex working conditions are guaranteed; the sealing structure is beneficial for improving tensile strength, compressive strength and sealing effect, effectively resisting high temperature, high pressure and vibration of an engine, prolonging service life, reducing maintenance cost, preventing engine medium leakage, guaranteeing operation safety, improving installation efficiency, guaranteeing installation accuracy and reducing sealing failure risk.

Description

Technical Field

[0001] This utility model relates to the field of engine gasket technology, and in particular to a high-strength engine sealing gasket. Background Technology

[0002] Gaskets are sealing components used in machinery, equipment, and pipelines—anywhere fluid is present. They are used both internally and externally to provide a sealing effect. Gaskets are made of metal or non-metal sheet material through processes such as cutting, stamping, or trimming. They are used for sealing connections between pipes and between machine parts. According to the material, they can be divided into metal gaskets and non-metal gaskets.

[0003] Currently, most engine gaskets on the market use a single material or a simple composite structure in practical applications. Ordinary rubber gaskets are prone to aging and deformation at high temperatures, while metal gaskets may break due to insufficient toughness, leading to sealing failure. This can result in problems such as reduced engine power and poorer fuel economy, and in severe cases, even engine failure, increasing maintenance costs and downtime. Utility Model Content

[0004] To overcome the technical defects of the existing technology, this utility model provides a high-strength engine sealing gasket.

[0005] The technical solution adopted by this utility model is: a high-strength engine sealing gasket, including a core plate, a metal plate covered on the surface of the core plate, a base layer covered on the surface of the metal plate, a reinforcing layer covered on the surface of the base layer, and a sealing layer covered on the surface of the reinforcing layer, which significantly extends the service life of the sealing gasket and ensures stable engine operation.

[0006] Preferably, the core plate and the metal plate, the metal plate and the base layer, the base layer and the reinforcing layer, and the reinforcing layer and the sealing layer are all fixedly connected by a high-temperature resistant adhesive to ensure the reliability and sealing performance of the sealing gasket under complex working conditions.

[0007] Preferably, the core plate is made of high-strength fiber composite material, and the metal plate is an aluminum alloy plate, which improves the overall performance of the sealing gasket under high temperature and high pressure environments.

[0008] Preferably, the base layer is made of aramid fiber woven material to ensure that the sealing gasket operates stably for a long time in complex working environments.

[0009] Preferably, the reinforcing layer comprises interlaced glass fiber mesh and metal wire mesh, which effectively avoids gasket damage caused by local stress concentration and extends the service life of the sealing gasket.

[0010] Preferably, the sealing layer is made of polytetrafluoroethylene material, which effectively prevents leakage of high-temperature gases, fuel, lubricating oil and other media inside the engine, ensuring the sealing and safety of the engine during operation and improving engine efficiency.

[0011] Preferably, the circumferential surface of the sealing layer is provided with an auxiliary component, which includes a bottom post, a bending post, and a top post. Multiple bottom posts arranged in a ring array are fixedly connected to the circumferential surface of the sealing layer. A bending post is fixedly connected to the top of the bottom post, and a top post is fixedly connected to the top of the bending post. This quickly guides the sealing gasket into accurate position and effectively avoids installation tilt.

[0012] Preferably, the top of the top column has an inclined cut surface to ensure the accuracy and sealing performance of the sealing gasket installation.

[0013] The beneficial effects of this utility model are as follows: the core plate is made of aramid and carbon fiber composite, combined with aluminum alloy metal plate and multi-layer reinforcement structure, which helps to improve tensile strength, compressive strength and sealing effect, effectively resist engine high temperature and high pressure, extend service life, reduce maintenance costs, prevent engine medium leakage, and ensure operational safety. At the same time, the addition of auxiliary components helps to improve installation efficiency, ensure accurate installation, and reduce the risk of seal failure. Attached Figure Description

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

[0015] Figure 2 This utility model Figure 1 Sectional view at point AA;

[0016] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0017] Figure 4 This is a schematic diagram of the core board and metal plate of this utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the bottom column and sealing layer in this utility model;

[0019] Figure 6 This is a schematic diagram of the structure of the bending column and the top column in this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Core board; 2. Metal plate; 3. Base layer; 4. Reinforcing layer; 5. Sealing layer; 6. Auxiliary components; 61. Bottom column; 62. Bending column; 63. Top column; 64. Inclined section. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings:

[0022] like Figures 1 to 6 As shown, this embodiment provides a high-strength engine sealing gasket, including a core plate 1, a metal plate 2 sleeved on the surface of the core plate 1, a base layer 3 sleeved on the surface of the metal plate 2, a reinforcing layer 4 sleeved on the surface of the base layer 3, and a sealing layer 5 sleeved on the surface of the reinforcing layer 4.

[0023] In this implementation scheme, the multi-layer composite structure design of core plate 1, metal plate 2, base layer 3, reinforcing layer 4 and sealing layer 5 enables the sealing gasket to have synergistically enhanced mechanical properties. Core plate 1 provides basic strength support, metal plate 2 strengthens the overall rigidity and protects the internal structure, base layer 3 and reinforcing layer 4 further enhance the resistance to deformation, and sealing layer 5 achieves efficient sealing. Together, they resist the multiple effects of high temperature, high pressure, mechanical vibration and corrosive media inside the engine, significantly extending the service life of the sealing gasket and ensuring stable engine operation.

[0024] Furthermore:

[0025] In an optional embodiment, the core board 1 and the metal plate 2, the metal plate 2 and the base layer 3, the base layer 3 and the reinforcing layer 4, and the reinforcing layer 4 and the sealing layer 5 are all fixedly connected by a high-temperature resistant adhesive.

[0026] In this implementation plan, the use of high-temperature resistant adhesives ensures that each layer of the structure maintains a firm connection under the long-term high-temperature working environment of the engine, avoiding interlayer separation or misalignment, maintaining the integrity and stability of the multi-layer composite structure, thereby continuously leveraging the performance advantages of each layer of materials, and ensuring the reliability and sealing performance of the gasket under complex working conditions.

[0027] Furthermore:

[0028] In an optional embodiment, the core plate 1 is made of high-strength fiber composite material, and the metal plate 2 is an aluminum alloy plate. The high-strength fiber composite material is woven from aramid fiber and carbon fiber mixed in a mass ratio of [3:2].

[0029] In this implementation scheme: the core plate 1 is woven with a specific mass ratio of aramid fiber and carbon fiber. Combining the high toughness of aramid fiber and the high modulus of carbon fiber, the core plate 1 is endowed with extremely high tensile strength and fatigue resistance, which can effectively withstand the periodic mechanical stress inside the engine. The aluminum alloy metal plate 2, while ensuring lightweight, has high strength and good thermal conductivity. On the one hand, it enhances the overall rigidity of the gasket, and on the other hand, it can help dissipate the heat generated by the core plate 1 due to high temperature, reduce the risk of performance degradation of the core plate 1 due to overheating, and improve the comprehensive performance of the sealing gasket under high temperature and high pressure environment.

[0030] Furthermore:

[0031] In an optional embodiment, the base layer 3 is made of aramid fiber woven material.

[0032] In this implementation plan: the aramid fiber woven structure of the base layer 3 utilizes the excellent high temperature resistance and chemical corrosion resistance of aramid fiber to provide basic thermal stability and chemical protection for the sealing gasket. On the basis of the protection of the metal plate 2, it further resists the erosion of corrosive media such as fuel, lubricating oil, and combustion exhaust gas inside the engine, while enhancing the structural stability of the gasket and providing a reliable support foundation for the reinforcing layer 4 and the sealing layer 5, ensuring that the sealing gasket operates stably for a long time in complex working environments.

[0033] Furthermore:

[0034] In an optional embodiment, the reinforcing layer 4 comprises interlaced glass fiber mesh and metal wire mesh.

[0035] In this implementation scheme: the reinforcing layer 4, composed of interlaced fiberglass mesh and metal wire mesh, effectively resists external pressure and chemical corrosion due to the high hardness and good chemical stability of the fiberglass mesh; the metal wire mesh, with its excellent toughness and tensile strength, prevents the gasket from tearing under stress. The two intertwine to form a three-dimensional mesh reinforcement structure, which can disperse stress in all directions under complex working conditions such as engine vibration and pressure fluctuations, significantly improving the deformation resistance and overall strength of the sealing gasket, effectively avoiding gasket damage caused by local stress concentration, and extending the service life of the sealing gasket.

[0036] Furthermore:

[0037] In an optional embodiment, the sealing layer 5 is made of polytetrafluoroethylene (PTFE).

[0038] In this implementation scheme: the sealing layer 5, made of polytetrafluoroethylene (PTFE), can easily conform to the engine sealing surface during installation due to its extremely low coefficient of friction, reducing installation resistance; at the same time, thanks to its excellent chemical stability, it can withstand the erosion of various highly corrosive media inside the engine; its excellent sealing performance can tightly fill the tiny gaps on the sealing surface, forming a highly efficient sealing barrier, effectively preventing the leakage of high-temperature gases, fuel, lubricating oil, and other media inside the engine, ensuring the sealing and safety of the engine during operation, and improving engine efficiency.

[0039] Furthermore:

[0040] In an optional embodiment, an auxiliary component 6 is provided on the circumferential surface of the sealing layer 5. The auxiliary component 6 includes a bottom post 61, a curved post 62, and a top post 63. A plurality of bottom posts 61 arranged in a ring array are fixedly connected to the circumferential surface of the sealing layer 5. A curved post 62 is fixedly connected to the top of the bottom post 61. A top post 63 is fixedly connected to the top of the curved post 62. An inclined cut surface 64 is provided at the top of the top post 63.

[0041] In this implementation plan: During the installation of the gasket, the top post 63 serves as a positioning reference, contacting the engine mounting location to quickly guide the gasket into accurate position and effectively prevent installation tilting; the bottom post 61 and the bent post 62 provide stable support and flexible adjustment capability for the top post 63, reducing the risk of seal failure due to installation deviation, improving engine assembly efficiency and seal reliability; the inclined cut surface 64 helps guide installation tools or equipment, reducing the difficulty of installation operations and improving installation efficiency; and during the installation process, it enhances positioning stability, further ensuring the accuracy and sealing performance of the gasket installation.

[0042] Working principle: Core plate 1 is made of high-strength fiber composite material woven from aramid fiber and carbon fiber in a 3:2 mass ratio. The high toughness of aramid fiber and the high modulus of carbon fiber give it strong load-bearing capacity. During engine operation, core plate 1 can withstand the complex stress generated by internal high temperature, high pressure and mechanical vibration, fundamentally providing stable structural support for the sealing gasket and ensuring the stability of the overall shape and size of the gasket.

[0043] The aluminum alloy metal plate 2 is tightly fitted onto the surface of the core plate 1. The light weight, high strength and corrosion resistance of aluminum alloy not only further enhance the overall strength of the sealing gasket, but also act as a barrier to isolate the high temperature and corrosive media inside the engine, effectively protecting the core plate 1 and extending the service life of the sealing gasket.

[0044] The base layer 3 is made of aramid fiber woven material, which has high strength, high temperature resistance and chemical corrosion resistance. Based on the reinforcement of metal plate 2, it further enhances the strength of the gasket and improves its stability in high temperature and corrosive environment, providing a more solid foundation for the subsequent structure.

[0045] The reinforcing layer 4 is composed of interlaced glass fiber mesh and metal wire mesh. The good chemical stability and high strength of the glass fiber mesh, combined with the excellent toughness and tensile strength of the metal wire mesh, form a mutually supportive reinforcing structure. When the engine is working, the reinforcing layer 4 can effectively resist pressure, impact and deformation, and comprehensively improve the strength and stability of the sealing gasket.

[0046] The sealing layer 5 is made of polytetrafluoroethylene (PTFE), which, with its extremely low coefficient of friction, good chemical stability and excellent sealing performance, can fit tightly against the engine sealing surface during installation, effectively fill tiny gaps, prevent leakage of gas and liquid inside the engine, and achieve efficient sealing.

[0047] The auxiliary component 6 set on the circumferential surface of the sealing layer 5 consists of a bottom post 61, a bending post 62, and a top post 63. During installation, multiple top posts 63 arranged in a ring array first contact the engine mounting part. The top posts 63 serve as positioning references. Through their regular distribution characteristics, they can quickly guide the sealing gasket to the correct installation position, avoid gasket installation offset, and ensure installation accuracy.

[0048] The inclined cut surface 64 at the top of the top post 63 can reduce the contact resistance between the top post 63 and the installation part when the installation area is large, making it easier for the sealing gasket to slide into the installation position and avoiding installation inconvenience caused by the top post 63 blocking the installation. At the same time, the setting of the bent post 62 increases the flexibility of the top post 63, which can adapt to slight deviations and space constraints during the installation process to a certain extent, further improving the convenience and fault tolerance of the installation and ensuring the smooth installation of the sealing gasket.

[0049] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from the spirit and scope of the invention. All such changes and modifications fall within the scope of the invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. A high-strength engine sealing gasket, comprising a core plate (1), characterized in that: The core board (1) is covered with a metal plate (2), the metal plate (2) is covered with a base layer (3), the base layer (3) is covered with a reinforcing layer (4), and the reinforcing layer (4) is covered with a sealing layer (5).

2. The high-strength engine sealing gasket according to claim 1, characterized in that: The core board (1) is fixedly connected to the metal plate (2), the metal plate (2) to the base layer (3), the base layer (3) to the reinforcing layer (4), and the reinforcing layer (4) to the sealing layer (5) by a high-temperature resistant adhesive.

3. The high-strength engine sealing gasket according to claim 1, characterized in that: The core board (1) is made of high-strength fiber composite material, and the metal plate (2) is an aluminum alloy plate.

4. A high-strength engine sealing gasket according to claim 1, characterized in that: The base layer (3) is made of aramid fiber woven material.

5. A high-strength engine sealing gasket according to claim 1, characterized in that: The reinforcing layer (4) includes interlaced glass fiber mesh and metal wire mesh.

6. A high-strength engine sealing gasket according to claim 1, characterized in that: The sealing layer (5) is made of polytetrafluoroethylene.

7. A high-strength engine sealing gasket according to claim 1, characterized in that: The sealing layer (5) is provided with an auxiliary component (6) on its circumferential surface. The auxiliary component (6) includes a bottom post (61), a curved post (62), and a top post (63). The sealing layer (5) is fixedly connected with a plurality of bottom posts (61) arranged in a ring array. The top of the bottom post (61) is fixedly connected with a curved post (62), and the top of the curved post (62) is fixedly connected with a top post (63).

8. A high-strength engine sealing gasket according to claim 7, characterized in that: The top of the top column (63) has an inclined cut surface (64).

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