A double piston ring piston head suitable for ship internal combustion engines

Abstract

The utility model relates to the technical field of ship internal combustion engines, specifically a double-piston ring piston head suitable for ship internal combustion engines, comprising a piston body and a piston ring assembly, wherein the piston ring assembly comprises a first compression ring, a second compression ring and an oil return ring assembly, wherein the first compression ring, the second compression ring and the oil return ring assembly are arranged in sequence from top to bottom, and the double-piston ring piston head suitable for ship internal combustion engines comprises a first compression ring, a second compression ring and an oil return ring assembly, wherein the first compression ring and the second compression ring ensure the sealing of the piston head, and the design feature of the oil return ring assembly is that it comprises an upper pressure ring, a corrugated ring and a lower pressure ring, and this structure can ensure the circulation stability of the oil volume, and thickened gaskets are arranged between the upper pressure ring, the lower pressure ring and the corrugated ring to ensure the service life of the equipment, and at the same time, the thickened gaskets are also provided with circulation holes to ensure the stability of the oil circulation and the lubrication effect.

Description

Technical Field

[0001] The utility model relates to the technical field of ship internal combustion engines, in particular to a double-piston ring piston head suitable for ship internal combustion engines. Background Art

[0002] A gas turbine ship, also known as an internal combustion engine ship, refers to a ship that is powered by an internal combustion engine. When the internal combustion engine is working, a double piston ring piston head is required. However, the oil return effect of the existing double piston head is unstable, and its three-layer oil return component is prone to wear and damage, resulting in unstable oil scraping and unstable oil flow. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides a double-piston ring piston head suitable for a ship internal combustion engine.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a double-piston ring piston head suitable for a ship internal combustion engine, comprising a piston body and a piston ring assembly, the piston ring assembly comprising a first compression ring, a second compression ring and an oil return ring assembly, the first compression ring, the second compression ring and the oil return ring assembly are arranged in sequence from top to bottom, the oil return ring assembly comprises an upper pressure ring, a corrugated ring and a lower pressure ring, the upper pressure ring, the corrugated ring and the lower pressure ring are arranged in sequence from top to bottom, the upper pressure ring and the lower pressure ring are also provided with a thickened gasket near one end of the corrugated ring, and a flow hole is provided in the center of the thickened gasket.

[0007] In order to ensure the stability of oil flow, the utility model is improved in that the thickened gasket is further provided with an auxiliary flange near one end of the corrugated ring, and the auxiliary flanges are provided in a plurality of groups.

[0008] Preferably, one side of the upper pressure ring and the lower pressure ring is provided with a side opening.

[0009] (III) Beneficial effects

[0010] Compared with the prior art, the utility model provides a double piston ring piston head suitable for a ship internal combustion engine, which has the following beneficial effects:

[0011] The double-piston ring piston head suitable for a ship internal combustion engine comprises a first compression ring, a second compression ring and an oil return ring assembly, wherein the first compression ring and the second compression ring ensure the sealing performance of the piston head, and the design feature of the oil return ring assembly is that it comprises an upper pressure ring, a corrugated ring and a lower pressure ring, and this structure can ensure the circulation stability of the oil volume, and thickened gaskets are arranged between the upper pressure ring, the lower pressure ring and the corrugated ring to ensure the service life of the equipment, and circulation holes are also arranged on the thickened gaskets to ensure the stability of the oil circulation and the lubrication effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0013] Figure 2 It is a partial explosion schematic diagram of the structure of the utility model;

[0014] Figure 3 This is an exploded schematic diagram of the oil return ring assembly of the utility model structure;

[0015] Figure 4 The utility model structure Figure 3 A partial enlarged schematic diagram is shown in the figure.

[0016] In the figure: 1. piston body; 2. first compression ring; 3. second compression ring; 4. upper pressure ring; 5. corrugated ring; 6. lower pressure ring; 7. thickened gasket; 8. auxiliary flange. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-4 A double-piston ring piston head suitable for a ship internal combustion engine comprises a piston body 1 and a piston ring assembly, wherein the piston ring assembly comprises a first compression ring 2, a second compression ring 3 and an oil return ring assembly, wherein the first compression ring 2, the second compression ring 3 and the oil return ring assembly are arranged in sequence from top to bottom, and the oil return ring assembly comprises an upper pressure ring 4, a corrugated ring 5 and a lower pressure ring 6, wherein the upper pressure ring 4, the corrugated ring 5 and the lower pressure ring 6 are arranged in sequence from top to bottom, and a thickened gasket 7 is further arranged at one end of the upper pressure ring 4 and the lower pressure ring 6 near the corrugated ring 5, and a flow hole is arranged in the center of the thickened gasket 7.

[0019] During actual use, the first compression ring 2 and the second compression ring 3 are fixed on the piston body 1, and the upper pressure ring 4 and the lower pressure ring 6 clamp the corrugated ring 5. The oil flows through the corrugated ring 5 between the upper pressure ring 4 and the lower pressure ring 6, which not only provides stable lubrication for the piston body 1, but also recovers excess oil. Then, the arc length of the thickened gasket 7 of the upper pressure ring 4 and the lower pressure ring 6 is greater than the groove between the corrugated ring 5 to ensure stable support, and cooperate with the flow holes that pass through the left and right sides to ensure the stability of the oil operation.

[0020] During actual use, the thickened gasket 7 is further provided with an auxiliary flange 8 near one end of the corrugated ring 5. The auxiliary flange 8 is arranged in several groups. The auxiliary flange 8 can adopt a high-temperature resistant elastic block or a high-temperature resistant support block to further prevent the wear between the thickened gasket 7 and the corrugated ring 5 and increase the circulation of the oil. Side openings are provided on one side of the upper pressure ring 4 and the lower pressure ring 6 to improve the sealing effect between the piston ring and the cylinder body and help to better control the lubrication state of the lubricating oil.

[0021] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0022] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.

[0023] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0024] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double piston ring piston head suitable for a ship internal combustion engine, comprising a piston body (1) and a piston ring assembly, characterized in that: The piston ring assembly comprises a first compression ring (2), a second compression ring (3) and an oil return ring assembly, wherein the first compression ring (2), the second compression ring (3) and the oil return ring assembly are arranged in sequence from top to bottom, and the oil return ring assembly comprises an upper pressure ring (4), a corrugated ring (5) and a lower pressure ring (6), wherein the upper pressure ring (4), the corrugated ring (5) and the lower pressure ring (6) are arranged in sequence from top to bottom, and a thickened gasket (7) is further arranged at one end of the upper pressure ring (4) and the lower pressure ring (6) close to the corrugated ring (5), and a flow hole is arranged at the center of the thickened gasket (7).

2. A double piston ring piston head suitable for a ship internal combustion engine according to claim 1, characterized in that: The thickened gasket (7) is also provided with an auxiliary flange (8) at one end close to the corrugated ring (5), and the auxiliary flanges (8) are arranged in a plurality of groups.

3. The double piston ring piston head suitable for a ship internal combustion engine according to claim 2, characterized in that: The upper pressure ring (4) and the lower pressure ring (6) are both provided with a side opening on one side.

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