A connecting device for host lubricating oil and an oil feeding method

Abstract

The present invention provides a connecting device and an oiling method for a main engine lubricating oil, comprising a main engine oil sump pipe section and an oil tank pipe section, wherein the main engine oil sump pipe section and the oil tank pipe section are split structures; a first end of the main engine oil sump pipe section is connected to a first end of the oil tank pipe section, the main engine oil sump pipe section comprises a main engine oil sump pipe section body and a first connecting structure arranged at the second end of the main engine oil sump pipe section, the first connecting structure being used to connect to the main engine oil sump, the oil tank pipe section comprises an oil tank pipe body and a second connecting structure arranged at the second end of the oil tank pipe section, the second connecting structure being used to connect to the oil tank; the main engine oil sump pipe section and the main engine oil sump are connected via the first connecting structure, the oil tank and the oil tank pipe section are connected via the second connecting structure, and then the main engine oil sump pipe section and the oil tank pipe section are connected. The connecting device for the main engine lubricating oil is simple and convenient to operate, avoids the prior art method of directly adopting welding during the main engine oil tank test stage, and has high safety performance.

Description

Technical Field

[0001] The present invention relates to the field of shipbuilding, and in particular to a connecting device for main engine lubricating oil and an oil injection method. Background Art

[0002] The lubrication forms of the ship's main engine lubricating oil system mainly include pressure lubrication and splash lubrication. Most of the lubricating oil eventually passes through the main engine oil pan, flows through the main engine oil return connection, the main engine oil return hole, and enters the lubricating oil circulation tank for recycling.

[0003] During the shipbuilding process, main engine lubricating oil filling is divided into the main engine lubricating oil external circulation test phase and the internal circulation acceptance phase after the test phase. In both phases, the main engine's oil tank sump and lubricating oil circulation tank must be connected. During the external circulation test phase, the main engine position is only preliminarily determined, while the internal circulation acceptance phase finalizes the main engine position. Due to the changes in the main engine position between the two phases, the relative position between the oil tank sump and lubricating oil circulation tank also changes.

[0004] In the prior art, the oil tank sump and the lubricating oil circulating tank are welded together in both stages using connecting pipes. This requires the removal of these connecting pipes after the external lubricating oil testing phase of the main engine is complete, and then the welding of these connecting pipes based on the final position of the main engine. Repeated welding between the main engine oil sump and the lubricating oil circulating tank damages the tank walls, shortening their lifespan. Furthermore, the distance between the main engine oil sump and the lubricating oil circulating tank is small (250-400mm), making the welding process not only inconvenient but also posing safety risks such as explosions. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a connecting device and an oil injection method for the main engine lubricating oil.

[0006] The present invention provides a connecting device for main engine lubricating oil, comprising a main engine oil pan pipe section and an oil tank pipe section, wherein the main engine oil pan pipe section and the oil tank pipe section are separate structures; a first end of the main engine oil pan pipe section is connected to a first end of the oil tank pipe section, the main engine oil pan pipe section comprises a main engine oil pan pipe section body and a first connecting structure provided at the second end of the main engine oil pan pipe section, the first connecting structure being used to connect to the main engine oil pan, the oil tank pipe section comprises an oil tank pipe body and a second connecting structure provided at the second end of the oil tank pipe section, the second connecting structure being used to connect to the main engine oil pan The connecting structure is used to connect the oil tank; the second connecting structure includes a second convex ring portion protruding circumferentially outward from the oil tank pipe body, a groove provided in the oil tank pipe body, and a clamp for snapping onto the groove; when the oil tank pipe section is connected to the oil tank, the second convex ring portion abuts against the inner wall of the oil tank, and the clamp abuts against the outer wall of the oil tank; the first connecting structure includes a first convex ring portion protruding circumferentially outward from the main engine oil pan pipe section body, the first convex ring portion is located in the main engine oil pan and is used to limit the position of the main engine oil pan pipe section body.

[0007] Preferably, the groove is provided with a first wedge-shaped end surface on the inner side wall near the first end of the oil tank pipe section, the first wedge-shaped end surface is inclined from top to bottom toward the second end of the oil tank pipe section, and the clamp is provided with a second wedge-shaped end surface abutting against the first wedge-shaped end surface.

[0008] Preferably, the first connection structure includes a clamping plate provided between the first convex ring portion and the inner wall of the main engine oil pan.

[0009] Preferably, the first end of the main engine oil sump pipe section and the first end of the oil tank pipe section are both fixed with flanges, and the two flanges are connected by bolts.

[0010] A method for feeding lubricating oil to an engine, using the above-mentioned connecting device, comprises the following steps: S1. When feeding lubricating oil to an engine through an external circulation, the positions of the engine oil pan and the oil tank are determined based on the initial placement of the engine, and the engine oil pan and the oil tank are connected via the connecting device; S2. The connecting device for feeding lubricating oil to an engine is removed, and the positions of the engine oil pan and the oil tank are adjusted based on the final placement requirements of the engine; S3. A connecting pipe is selected based on the distance between the oil tank and the engine oil pan, and the two ends of the connecting pipe are welded to the oil tank and the engine oil pan, respectively.

[0011] As described above, the present invention relates to a connection device and method for lubricating oil in an engine. A first connection structure connects the engine oil pan pipe section to the engine oil pan, a second connection structure connects the oil tank to the oil tank pipe section, and then the engine oil pan pipe section is connected to the oil tank pipe section. This connection device for lubricating oil in an engine is simple and convenient to operate, avoiding the prior art method of directly welding during the engine oil tank testing phase. This provides high safety and prevents damage to the oil tank wall caused by repeated welding. Furthermore, the connection method, in which the first and second convex ring portions respectively abut the inner walls of the engine oil pan and the oil tank, ensures effective sealing between the oil tank pipe section and the oil tank, and between the engine oil pan pipe section and the engine oil pan. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of a connecting device for host lubricating oil of the present invention.

[0013] Figure 2 This is a schematic diagram of an engine oil pan pipe section in an engine lubricating oil connection device of the present invention.

[0014] Figure 3 The figure is a schematic diagram of an oil tank pipe section in a connecting device for lubricating oil of a main engine according to the present invention.

[0015] Figure 4 The figure is a partial schematic diagram of an oil tank pipe section in a connecting device for lubricating oil of a main engine according to the present invention.

[0016] Figure 5 for Figure 4 Magnified view of area A in center.

[0017] Figure 6 This is a partial schematic diagram of a connecting device for host lubricating oil of the present invention.

[0018] Description of reference numerals:

[0019] 100, main engine oil pan pipe section; 110, main engine oil pan pipe section body; 120, first convex ring portion; 130, clamping plate; 200, oil tank pipe section; 210, oil tank pipe section body; 220, second convex ring portion; 230, groove; 231, first wedge-shaped end face; 240, clamp; 241, second wedge-shaped end face; 250, flange; 251, bolt; 300, main engine oil pan; 400, oil tank; 500, sealing gasket. DETAILED DESCRIPTION

[0020] The following describes the implementation of the present invention through specific embodiments. People skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0021] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for understanding and reading by those familiar with this technology, and are not used to limit the conditions for implementation of the present invention. Therefore, they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the efficacy and purpose that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle", etc. quoted in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0022] like Figure 1-6 As shown, an embodiment of an engine lubricating oil connection device includes an engine oil pan pipe section 100 and an oil tank pipe section 200. The engine oil pan pipe section 100 and the oil tank pipe section 200 are separate structures. The first end of the engine oil pan pipe section 100 is connected to the first end of the oil tank pipe section 200. The second end of the engine oil pan pipe section 100 is provided with a first connection structure connected to the engine oil pan pipe section 100. The oil tank pipe section 200 includes an oil tank pipe section body 210 and a second connection structure provided at the second end of the oil tank pipe section 200. The second connection structure is used to connect to the oil tank 400.

[0023] The second connection structure includes a second protruding ring portion 220 circumferentially protruding outward from the oil tank pipe section body 210, a groove 230 provided in the oil tank pipe section body 210, and a clamp 240 for snapping into the groove 230. When the oil tank pipe section 200 is connected to the oil tank 400, the protruding ring portion abuts against the inner wall of the oil tank 400, and the clamp 240 abuts against the outer wall of the oil tank 400.

[0024] The first connection structure includes a first protruding ring portion 120 that protrudes outward in the circumferential direction from the main engine oil pan pipe section body 110 . The first protruding ring portion 120 is located in the main engine oil pan 300 and is used to define the position of the main engine oil pan pipe section body 110 .

[0025] Specifically, when the oil tank pipe section 200 is connected to the oil tank 400, the first end of the oil tank pipe section 200 extends out of the oil tank 400 from the inside of the oil tank 400 through the oil return hole of the oil tank 400, so that the second convex ring portion 220 abuts against the inner wall of the oil tank 400, and then the clamp 240 is fixed on the groove 230, so that the clamp 240 abuts against the outer wall of the oil tank 400, and finally the oil tank pipe section 200 is fixed to the oil tank 400 through the clamp 240 and the second convex ring portion 220.

[0026] When connecting the main engine oil pan pipe section 100 to the main engine oil pan 300, the first end of the pan pipe section extends outward from the main engine oil pan 300 through the oil return hole of the main engine oil pan 300, so that the first protruding ring portion 120 abuts the inner wall of the main engine oil pan 300. The first end of the main engine oil pan pipe section 100 is then connected to the first end of the oil tank pipe section 200 to secure the oil tank 400 to the main engine oil pan 400. In this embodiment, the first ends of the main engine oil pan pipe section 100 and the first ends of the oil tank pipe section 200 are both fixed with flanges 250, and the two flanges 250 are connected by bolts 251.

[0027] The first connecting structure connects the main engine oil pan pipe section 100 to the main engine oil pan 300, the second connecting structure connects the oil tank 400 to the oil tank pipe section 200, and then the main engine oil pan pipe section 100 and the oil tank pipe section 200 are connected. This main engine lubricating oil connection device is simple and convenient to operate, avoiding the conventional method of directly using welding during the main engine oil tank testing phase. It has high safety performance and avoids damage to the oil tank 400 wall caused by repeated welding. At the same time, the first raised ring portion 120 and the second raised ring portion 220 respectively abut the inner wall of the main engine oil pan 300 and the inner wall of the oil tank 400 to ensure the sealing effect between the oil tank pipe section 200 and the oil tank 400, and the main engine oil pan pipe section 100 and the main engine oil pan 300.

[0028] In order to further ensure the sealing effect of the first connecting structure and the second connecting structure, in this embodiment, a sealing gasket is arranged on the side of the first convex ring portion 120 facing the second end of the main engine oil pan pipe section 100, or / and the side of the second convex ring portion 220 facing the second end of the oil tank pipe section 200.

[0029] Preferably, a first wedge-shaped end surface 231 is provided on the inner side wall of the groove 230 near the first end of the oil tank pipe section 200, and the first wedge-shaped end surface 231 is inclined from top to bottom toward the second end of the oil tank pipe section 200, and the clamp 240 is provided with a second wedge-shaped end surface 241 abutting against the first wedge-shaped end surface 231.

[0030] When the clamp 240 is tightened at the groove 230 , the wedge-shaped end surface of the clamp 240 is locked along the wedge-shaped surface of the groove 230 toward the outer wall of the oil tank 400 , and finally the wall of the oil tank 400 is locked between the clamp 240 and the second convex ring portion 220 .

[0031] Specifically, the first connection structure includes a clamping plate 130 disposed between the first raised ring portion 120 and the inner wall of the main engine oil pan 300. The thickness of the clamping plate 130 between the first raised ring portion 120 and the inner wall of the main engine oil pan 300 can be adjusted to adjust the length of the first end of the oil tank pipe section 200 extending beyond the outer wall of the main engine oil pan 300, thereby adjusting the distance between the outer wall of the main engine oil pan 300 and the outer wall of the oil tank 400. To ensure a secure connection between the clamping plate 130 and the first raised ring portion 120, the clamping plate 130 and the outer wall of the main engine oil pan 300 are detachably connected via bolts 251.

[0032] An embodiment of a method for adding lubricating oil to an engine, using any of the above-mentioned connecting devices, includes the following steps: S1. During the lubricating oil external circulation stage of the engine, the positions of the engine oil pan 300 and the oil tank 400 are confirmed based on the initial placement of the engine, and the engine oil pan 300 and the oil tank 400 are connected via the connecting device; S2. The connecting device for the engine lubricating oil is removed, and the positions of the engine oil pan 300 and the oil tank 400 are adjusted based on the final placement of the engine; S3. Based on the distance between the oil tank 400 and the engine oil pan 300, a connecting pipe is selected, and the two ends of the connecting pipe are welded to the oil tank 400 and the engine oil pan 300, respectively.

[0033] Among them, the main engine oil pan pipe section 100 and the main engine oil pan 300 are connected by a first connecting structure, the oil tank 400 and the oil tank pipe section 200 are connected by a second connecting structure, and then the main engine oil pan pipe section 100 and the oil tank pipe section 200 are connected. The main engine lubricating oil connection device is simple and convenient to operate, avoiding the prior art method of directly using welding during the main engine oil tank test phase, with high safety performance, avoiding damage to the oil tank wall due to repeated welding, and the problem of inconvenient welding in a narrow space; at the same time, it eliminates safety risks such as explosions caused by frequent welding in a narrow space.

[0034] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A connecting device for host lubricating oil, characterized in that: The invention comprises a main engine oil pan pipe section (100) and an oil tank pipe section (200), wherein the main engine oil pan pipe section (100) and the oil tank pipe section (200) are separate structures; a first end of the main engine oil pan pipe section (100) is connected to a first end of the oil tank pipe section (200); the main engine oil pan pipe section (100) comprises a main engine oil pan pipe section (100) body and a first connecting structure provided at a second end of the main engine oil pan pipe section (100), wherein the first connecting structure is used to connect to the main engine oil pan (300); the oil tank pipe section (200) comprises an oil tank (400) pipe body and a second connecting structure provided at a second end of the oil tank pipe section (200), wherein the second connecting structure is used to connect to the oil tank (400); The second connection structure comprises a second convex ring portion (220) protruding circumferentially outward from the oil tank (400) pipe body, a groove (230) provided in the oil tank (400) pipe body, and a clamp (240) for snapping onto the groove (230); when the oil tank pipe section (200) is connected to the oil tank (400), the second convex ring portion (220) abuts against the inner wall of the oil tank (400), and the clamp (240) abuts against the outer wall of the oil tank (400); a first wedge-shaped end surface (231) is provided on the inner side wall of the groove (230) near the first end of the oil tank pipe section (200), and the first wedge-shaped end surface (231) is inclined from top to bottom toward the second end of the oil tank pipe section (200); and the clamp (240) is provided with a second wedge-shaped end surface (241) abutting against the first wedge-shaped end surface (231); The first connection structure comprises a first convex ring portion (120) protruding circumferentially outward from the main engine oil pan pipe section body (110); the first convex ring portion (120) is located in the main engine oil pan (300) and is used to define the position of the main engine oil pan pipe section body (110); and the first connection structure comprises a clamping plate (130) arranged between the first convex ring portion (120) and the inner wall of the main engine oil pan (300).

2. A connecting device for host lubricating oil according to claim 1, characterized in that: The first end of the main engine oil sump pipe section (100) and the first end of the oil tank pipe section (200) are both fixedly provided with flanges (250), and the two flanges (250) are connected by bolts (251).

3. A method for feeding lubricating oil to a main engine, characterized in that: The connecting device according to claim 1 or 2 comprises the following steps: S1, during the main engine external circulation oiling stage, confirming the positions of the main engine oil pan (300) and the oil tank (400) according to the initial placement position of the main engine, and connecting the main engine oil pan (300) and the oil tank (400) through the connecting device; S2. Remove the connecting device of the main engine lubricating oil, and adjust the positions of the main engine oil pan (300) and the oil tank (400) according to the final placement requirements of the main engine; S3. Select a connecting pipe according to the distance between the oil tank (400) and the main engine oil pan (300), and weld the two ends of the connecting pipe to the oil tank (400) and the main engine oil pan (300), respectively.

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