Oil return seat ring connecting assembly of marine main engine

Abstract

The utility model discloses an oil return seat ring connecting assembly of a marine main engine, which relates to the technical field of marine main engine construction equipment, and comprises an oil return seat ring connecting assembly connected between a main engine oil return hole and a main engine lubricating oil circulation cabin oil return port, and the oil return seat ring connecting assembly comprises a rubber pad, an oil return seat ring and a seat plate, the rubber pad is connected to a main engine oil return hole through a fastener, the seat plate is fixedly connected to the upper portion of an oil return opening of a main engine lubricating oil circulation cabin, and the oil return seat ring is arranged between the rubber pad and the seat plate and detachably connected to the seat plate. According to the utility model, the lubricating oil string washing work of the main engine is advanced, the repeated work of secondary welding of the oil return seat ring is avoided, the construction period is shortened, and manpower and material resources are saved; and meanwhile, the construction potential safety hazard caused by secondary welding of the oil return seat ring is eliminated.

Description

Technical Field

[0001] The utility model relates to the technical field of ship main engine construction equipment, in particular to an oil return seat ring connecting component of a ship main engine. Background Art

[0002] The main engine of a large ship is fixed to the hull with "epoxy resin + foot bolts", and the other parts are elastically connected due to the vibration of the main engine. Therefore, when the lubricating oil inside the main engine returns to the main engine oil circulation tank, a soft connection with a rubber pad is used, and the fastening of the rubber pad and the main engine oil circulation tank uses a return oil seat ring recommended by a specific brand, such as Figure 1 As shown, the oil return seat ring is directly welded to the top plate of the main engine oil circulation compartment.

[0003] Because the rubber pad of the main engine oil return hole has an inclination requirement for installation, in the previous ship construction process, the oil return seat ring can only be welded and the rubber pad installed after the main engine and shaft system work is completed, that is, the main engine height is determined. As a result, the main engine lubricating oil system pipe system serial washing work is delayed, which greatly affects the progress of the main motor vehicle and ship trial and delivery.

[0004] In order to solve the problem of delayed main engine oil washing, manufacturers usually install the oil return seat ring in advance, connect the system pipeline and the main engine oil circulation tank in series to form a circulation loop, and start the main lubricating oil pump to wash the pipeline and bulkhead; after the main engine is installed and positioned on board, if the inclination of the oil return rubber pad is measured to exceed the allowable value, the cleaning oil in the tank must be discharged, the oil return seat ring is cut, and a new oil return seat ring is welded for a second time until the inclination of the oil rubber pad is within the allowable value; this causes repeated work, affects the progress of the project, and wastes manpower and material resources; and the secondary welding of the oil return seat ring requires tank cleaning, grinding, ventilation, etc., which increases the potential safety hazards in construction. Utility Model Content

[0005] The purpose of the utility model is to provide an oil return seat ring connection assembly for a ship main engine, so that the main engine lubricating oil washing work can be advanced and the repeated work of secondary welding of the oil return seat ring can be avoided, thereby saving construction time and manpower and material resources; at the same time, the construction safety hazards caused by secondary welding of the oil return seat ring are eliminated.

[0006] The utility model comprises an oil return seat ring connection assembly connected between the main engine oil return hole and the main engine lubricating oil circulation tank oil return port, the oil return seat ring connection assembly comprises a rubber pad, an oil return seat ring and a seat plate, the rubber pad is connected to the main engine oil return hole by a fastener, the seat plate is fixedly connected above the main engine lubricating oil circulation tank oil return port, the oil return seat ring is arranged between the rubber pad and the seat plate, and the oil return seat ring is detachably connected to the seat plate.

[0007] Preferably, a flange is fixedly provided on the side of the oil return seat ring, and the flange is connected to the seat plate through fasteners.

[0008] Preferably, the flange is fixed below the side of the oil return seat ring and is perpendicular to the oil return seat ring.

[0009] Preferably, a threaded through hole is provided on the flange, and a threaded countersunk hole is provided on the seat plate at a position corresponding to the threaded through hole, and the flange and the seat plate are connected by bolts.

[0010] Preferably, the oil return seat ring is made of stainless steel.

[0011] In summary, the utility model has the following beneficial effects:

[0012] 1. The new oil return connection assembly provided by the utility model comprises a seat plate arranged at the oil return port of the main engine lubricating oil circulation tank, and the connection between the oil return seat ring and the seat plate is arranged in a detachable form, so that the main engine lubricating oil washing work can be advanced, the shaft system work and the main lubricating oil washing work are carried out synchronously, the ship construction process is more reasonable, the ship construction period is shortened by 3-5 days, and the construction costs such as manpower and material resources are saved;

[0013] 2. Avoid the secondary construction of the oil return seat ring caused by inappropriate height of the oil return seat ring after the main engine is positioned, and at the same time avoid the hidden danger of secondary welding of the original oil return seat ring, thereby improving construction safety; BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the oil return seat ring currently used in the background technology;

[0015] Figure 2 This is a structural schematic diagram of an oil return seat ring connection assembly of a ship main engine according to the utility model;

[0016] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0017] Figure 4 The present invention is a flow chart of the main lubricating oil leakage process after the oil return seat ring connecting assembly of the utility model is used. DETAILED DESCRIPTION

[0018] The utility model will be further described below in conjunction with the accompanying drawings.

[0019] The orientations involved in this specification are based on the orientation of the oil return seat ring connection assembly of the main engine of a ship of the utility model when it is working normally, and do not limit its orientation during storage and transportation. It only represents a relative position relationship, not an absolute position relationship.

[0020] like Figures 2 to 4As shown, an oil return seat ring 4 connecting assembly of a ship main engine includes an oil return seat ring 4 connecting assembly connected between the main engine oil return hole 1 and the main engine oil circulation tank 8 oil return port 2, the oil return seat ring 4 connecting assembly includes a rubber pad 3, an oil return seat ring 4 and a seat plate 5, the oil return seat ring 4 connecting assembly is used to connect the main oil pump, pipelines and the main engine oil circulation tank 8 in series into a circulation loop, so as to wash the main engine oil system pipeline; the rubber pad 3 is connected to the main engine oil return hole 1 by a fastener, the seat plate 5 is fixedly connected to the top of the main engine oil circulation tank 8 oil return port 2, the oil return seat ring 4 is arranged between the rubber pad 3 and the seat plate 5, and the oil return seat ring 4 is detachably connected to the seat plate 5; preferably, a guide pipe 9 is provided at the main engine oil circulation tank 8 oil return port 2, the guide pipe 9 extends into the main engine oil circulation tank 8, and is used to guide the oil to facilitate the circulation of the oil.

[0021] A flange 6 is fixedly provided on the side of the oil return seat ring 4, and the flange 6 is fixedly welded to the lower side of the oil return seat ring 4 and is perpendicular to the oil return seat ring 4; a through hole is provided on the flange 6, and a countersunk hole is provided at a position corresponding to the through hole on the seat plate 5, and the flange 6 is connected to the seat plate 5 through a fastener; preferably, the through hole is a threaded through hole, the countersunk hole is a threaded countersunk hole, and the fastener is a bolt 7.

[0022] The oil return seat ring 4 is made of stainless steel material. The oil return seat ring 4 made of stainless steel material is strong and durable and convenient to weld.

[0023] After adopting the new oil return connection assembly, the oil pipeline series washing can be started in advance after the ship's shaft system is illuminated; open the oil return port on the top of the main engine oil circulation tank 8, and weld the seat plate 5, use the tooling hose 10 to connect the system pipeline, the main engine oil circulation tank 8 and the main oil pump in series into a complete loop, inject cleaning oil into the tank, start the main oil pump to series wash the main oil pipeline and the main engine oil circulation tank 8, at this time, the ship's shaft system boring and re-lighting work are carried out simultaneously; after the cleaning oil stage series washing is qualified, remove the tooling hose 10, hoist the main engine into the engine room, and carry out the installation of the main engine and shaft system; after the shaft system alignment is completed, the main engine height is no longer adjusted, according to the existing height of the main engine, grind and install the oil return seat ring 4, and finally install the rubber pad 3, after confirming that the rubber pad 3 is tight, prepare to carry out the next step of the series washing process, that is, series washing with the machine.

[0024] Compared with the traditional installation method of the oil return seat ring 4, the installation position of the new oil return seat ring 4 in the new oil return connection assembly is more convenient, and only needs to be tightened with bolts 7; at the same time, the specific position of the flange 6 can be welded according to the height of the main engine, so that the inclination of the rubber pad 3 meets the requirements of the brand, which is simple and easy to implement.

[0025] From the above process, it can be clearly seen that after adopting the new oil return connection assembly, the main lubricating oil pipeline series washing process has been greatly advanced, and the construction period of the main engine and shaft system has been shortened by 3-5 days, with remarkable results. Therefore, the main lubricating oil pipeline series washing work is no longer a factor restricting the main motor vehicle and ship sea trials; at the same time, it avoids secondary construction caused by the inappropriate height of the main engine oil return seat ring 4, saves manpower and material costs, and achieves the purpose of reducing costs and increasing efficiency.

[0026] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. An oil return seat ring connection assembly for a ship main engine, characterized in that: The invention comprises an oil return seat ring (4) connecting assembly connected between a main engine oil return hole (1) and a main engine lubricating oil circulation compartment (8) oil return port (2), wherein the oil return seat ring (4) connecting assembly comprises a rubber pad (3), an oil return seat ring (4) and a seat plate (5), wherein the rubber pad (3) is connected to the main engine oil return hole (1) by means of a fastener, the seat plate (5) is fixedly connected above the main engine lubricating oil circulation compartment (8) oil return port (2), the oil return seat ring (4) is arranged between the rubber pad (3) and the seat plate (5), and the oil return seat ring (4) is detachably connected to the seat plate (5).

2. The oil return seat ring connection assembly of a ship main engine according to claim 1, characterized in that: A flange (6) is fixedly provided on the side of the oil return seat ring (4), and the flange (6) is connected to the seat plate (5) via a fastener.

3. The oil return seat ring connection assembly of a ship main engine according to claim 2, characterized in that: The flange (6) is fixedly arranged below the side of the oil return seat ring (4) and is perpendicular to the oil return seat ring (4).

4. The oil return seat ring connection assembly of a ship main engine according to claim 2, characterized in that: The flange (6) is provided with a threaded through hole, and the seat plate (5) is provided with a threaded countersunk hole at a position corresponding to the threaded through hole. The flange (6) and the seat plate (5) are connected by bolts (7).

5. The oil return seat ring connection assembly of a ship main engine according to claim 1, characterized in that: The oil return seat ring (4) is made of stainless steel.

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