Device and method for cleaning main lubricating oil system of ship

Abstract

The invention provides a device and method for assisting in cleaning a ship fuel oil pipeline, and the device is characterized in that a peripheral pipeline is connected with a lubricating oil circulation cabin of a main engine, the peripheral pipeline comprises a first cooler, a second cooler and a first pipeline, and an oil inlet pipeline of the first cooler communicates with an oil inlet pipeline of the second cooler through a first four-way connector; an oil outlet pipeline of the first cooler is communicated with an oil outlet pipeline of the second cooler through a second four-way connector, the first pipeline is connected with the first four-way connector and the second four-way connector, the other end of the cleaning assembly is communicated with the inlet end of a main machine lubricating oil circulation cabin, and the outlet end of the main machine lubricating oil circulation cabin is connected with the first four-way connector. The device greatly reduces the number of oil feeding temporary pipes, reduces the installation workload of the temporary pipes before oil feeding, shortens the installation period, and further shortens the whole oil feeding period; the oil throwing period of the main lubricating oil of the ship is shortened, the number of used temporary pipes is reduced, garbage brought by the temporary pipes in the system is reduced, and the overall oil throwing period is greatly shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of shipbuilding, and in particular to a device and method for cleaning a main lubricating oil system of a ship. Background Art

[0002] The main lubricating oil system is a very important system in the main engine of a ship, which undertakes multiple functions such as lubrication, cooling, hydraulic drive, etc. Therefore, it is necessary to strictly control the cleanliness of the system to ensure that the main engine will not be damaged by bearings due to lubricating oil or uncleanness, or related drive accessories will be blocked, resulting in the main engine not being able to work normally.

[0003] At present, in actual production, the control of the cleanliness of the main lubricating oil system is achieved by the main lubricating oil injection, and the main lubricating oil injection is generally divided into two stages: peripheral pipeline injection and engine injection. The peripheral pipeline injection is mainly divided into two steps. The first step is to bypass the two plate coolers and lubricating oil self-cleaning filters in the system, and then turn out the engine interface pipe, connect it to the temporary filter through a temporary pipe and return it to the lubricating oil circulation tank, and then inject oil until the cleanliness requirements are met; the second step is to confirm the cleanliness in the first step, reset the plate cooler pipeline on the basis of this pipeline connection, and inject oil again until the cleanliness requirements are met. Engine injection is based on the peripheral pipeline injection, and a stuffy plate is placed inside the main engine according to the manufacturer's requirements, and then the original pipeline directly returning to the lubricating oil circulation tank at the engine is modified to pass through a temporary filter and then connected to the main engine, and then the entire system is reset after the oil injection meets the cleanliness requirements to complete the injection operation.

[0004] The current oil injection scheme has two major workloads in the installation of temporary pipelines. The first involves the temporary pipe connection at the plate cooler. The two halves of the plate cooler, one for use and one for backup, are arranged face to face, and the inlet and outlet are two tees connected to the inlet and outlet of the two plate coolers and the system respectively. Due to equipment installation reasons, this part of the pipeline is very difficult to disassemble and assemble, and it often takes a whole day to install the bypass pipe, and the subsequent reset also takes a lot of time; the second is the pipeline at the temporary filter installed before the machine, which often requires the installation of more than ten temporary pipes, and the workload is also very huge.

[0005] In addition, due to the high requirements for pipeline cleaning and the inevitable cross-operation during pipeline installation, the pipeline cannot be guaranteed to be sufficiently clean, so it takes a long time to oil the pipeline to achieve the required cleanliness requirements.

[0006] In summary, in the current main lubricating oil injection operation, there is a lack of a reasonable pipeline design scheme to reduce the installation work of temporary pipes, and there is also a lack of a simple, fast and effective method to achieve the purpose of quickly cleaning the main lubricating oil pipeline.

[0007] Based on the above situation, there is an urgent need to provide a device for assisting in cleaning the fuel pipeline of a ship, which can clean it more efficiently. Summary of the invention

[0008] The present application provides a device for cleaning a main lubricating oil system of a ship, which can clean the main lubricating oil system of the ship simply, quickly and effectively.

[0009] The present application provides a device for assisting in cleaning a fuel pipeline of a ship, wherein the main lubricating oil system of the ship comprises a peripheral pipeline and a main engine, wherein the peripheral pipeline is connected to the lubricating oil circulation tank of the main engine, and is characterized in that the peripheral pipeline comprises a first cooler, a second cooler and a first pipeline, wherein the oil inlet pipeline of the first cooler and the oil inlet pipeline of the second cooler are connected via a first four-way joint, the oil outlet pipeline of the first cooler and the oil outlet pipeline of the second cooler are connected via a second four-way joint, the first pipeline connects the first four-way joint and the second four-way joint, one end of the cleaning component is connected to the second four-way joint, the other end of the cleaning component is connected to the inlet end of the main engine lubricating oil circulation tank, and the outlet end of the main engine lubricating oil circulation tank is connected to the first four-way joint.

[0010] In some optional embodiments, the cleaning assembly includes a filter, a fine filter, a second pipeline, and a third pipeline. The filter is connected to the second four-way joint, the second pipeline is respectively connected to the filter and the third pipeline, the third pipeline is connected to the second pipeline and the fine filter, and the fine filter is connected to the inlet end of the main engine lubricating oil circulation compartment.

[0011] In some optional embodiments, a stop valve is provided on the oil inlet line of the first cooler.

[0012] In some optional embodiments, a shut-off valve is provided in the oil inlet pipeline of the second cooling unit.

[0013] In some optional embodiments, a stop valve is provided on the oil outlet pipeline of the first cooler.

[0014] In some optional embodiments, a stop valve is provided on the oil outlet pipeline of the second cooler.

[0015] On the other hand, the present application provides a method for cleaning a main lubricating oil system of a ship, which is implemented by the device for cleaning the main lubricating oil system of a ship as described in any one of the above items, comprising: connecting the first pipeline to the first four-way joint and the second four-way joint to optimize the peripheral pipeline; designing a cleaning component; connecting the peripheral pipeline, the cleaning component and the main engine lubricating oil circulation tank together; disconnecting the oil inlet pipeline of the first cooler, the oil inlet pipeline of the second cooler, the oil outlet pipeline of the first cooler and the oil outlet pipe of the second cooler; connecting the first pipeline, the cleaning component and the main engine lubricating oil circulation tank to use the peripheral pipeline for the first cleaning; removing the first pipeline, starting the oil inlet pipeline of the first cooler and the oil outlet pipeline of the first cooler, disconnecting the oil inlet pipeline of the second cooler and the oil outlet pipe of the second cooler, and then disconnecting the oil inlet pipeline of the first cooler and the oil outlet pipeline of the first cooler, starting the oil inlet pipeline of the second cooler and the oil outlet pipe of the second cooler to use the peripheral pipeline for the second cleaning; adjusting the structure of the cleaning component to clean the main engine; removing the cleaning component to reset the peripheral pipeline and the main engine.

[0016] In some optional embodiments, the step of designing the cleaning component includes designing the second pipeline so that one end of the second pipeline corresponds to the filter outlet; designing the third pipeline so that one end of the third pipeline corresponds to the filter outlet and the other end is consistent with the oil circulation tank inlet of the main engine.

[0017] In some optional embodiments, the step of adjusting the structure of the cleaning component before cleaning the host further includes removing the first pipeline and cleaning the first pipeline.

[0018] In some optional embodiments, the step of adjusting the structure of the cleaning component and cleaning the main engine includes removing the first pipeline and the fine filter, the second pipeline connects the filter and the inlet end of the main engine lubricating oil circulation tank, and the outlet end of the main engine lubricating oil circulation tank is connected to the filter.

[0019] Compared with the prior art, the present invention has the following technical effects:

[0020] The present application provides a device for assisting in cleaning the fuel pipeline of a ship, comprising: a peripheral pipeline is connected to the lubricating oil circulation tank of the main engine, the peripheral pipeline comprises a first cooler, a second cooler and a first pipeline, the oil inlet pipeline of the first cooler is connected to the oil inlet pipeline of the second cooler through a first four-way joint, the oil outlet pipeline of the first cooler is connected to the oil outlet pipeline of the second cooler through a second four-way joint, the first pipeline is connected to the first four-way joint and the second four-way joint, the other end of the cleaning component is connected to the inlet end of the main engine lubricating oil circulation tank, and the outlet end of the main engine lubricating oil circulation tank is connected to the first four-way joint. The device greatly reduces the number of temporary oiling pipes, reduces the workload of temporary pipe installation before oiling, shortens the installation cycle, and thus shortens the entire oiling cycle; shortens the ship's main lubricating oil oiling cycle, reduces the number of temporary pipes used, reduces the garbage brought by temporary pipes in the system, and greatly shortens the overall oiling cycle. It can greatly improve the filtration efficiency, and at the same time does not affect the cleanliness inspection at the temporary filter, greatly improves the oiling efficiency, and shortens the oiling cycle; the device is simple and convenient to use, and has a wide range of applications.

[0021] The present application provides a method for assisting in cleaning the fuel pipeline of a ship, which greatly reduces the number of temporary pipes for oiling, reduces the workload of temporary pipe installation before oiling, shortens the installation cycle, and thus shortens the entire oiling cycle; shortens the oiling cycle of the ship's main lubricating oil, reduces the number of temporary pipes used, reduces the garbage caused by temporary pipes in the system, and greatly shortens the overall oiling cycle. It can greatly improve the filtration efficiency, while not affecting the cleanliness inspection at the temporary filter, greatly improve the oiling efficiency, and shorten the oiling cycle; the device is simple and convenient to use and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 It is a schematic diagram of the structure in which a conventional first cooler and a second cooler are connected;

[0024] Figure 2 A schematic diagram of the connection between a first cooler and a second cooler provided in an embodiment of the present invention;

[0025] Figure 3 A schematic diagram of a pipeline where the main lubricating oil enters the main engine provided by an embodiment of the present invention;

[0026] Figure 4 A schematic diagram of the structure of a peripheral pipeline provided by an embodiment of the present invention;

[0027] Figure 5 A schematic diagram of filter installation during the oil injection process of a peripheral pipeline provided by an embodiment of the present invention;

[0028] Figure 6 A schematic diagram of the pipeline connection for oil injection into a main engine provided in an embodiment of the present invention.

[0029] in, Figures 1 to 6 The corresponding relationship between the reference numerals and component names is as follows:

[0030] 1-first cooler; 2-second cooler; 3-first pipeline; 4-first four-way joint; 5-second four-way joint; 6-cleaning assembly; 61-filter; 62-fine filter; 63-second pipeline; 64-third pipeline; 7-main engine lubricating oil circulation compartment. DETAILED DESCRIPTION

[0031] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0033] The main lubricating oil system is a very important system in the main engine of a ship, which undertakes multiple functions such as lubrication, cooling, hydraulic drive, etc. Therefore, it is necessary to strictly control the cleanliness of the system to ensure that the main engine will not be damaged by bearings due to lubricating oil or uncleanness, or related drive accessories will be blocked, resulting in the main engine not being able to work normally.

[0034] At present, in actual production, the control of the cleanliness of the main lubricating oil system is achieved by the main lubricating oil injection, and the main lubricating oil injection is generally divided into two stages: peripheral pipeline injection and engine injection. The peripheral pipeline injection is mainly divided into two steps. The first step is to bypass the two plate coolers and lubricating oil self-cleaning filters in the system, and then turn out the engine interface pipe, connect it to the temporary filter through a temporary pipe and return it to the lubricating oil circulation tank, and then inject oil until the cleanliness requirements are met; the second step is to confirm the cleanliness in the first step, reset the plate cooler pipeline on the basis of this pipeline connection, and inject oil again until the cleanliness requirements are met. Engine injection is based on the peripheral pipeline injection, and a stuffy plate is placed inside the main engine according to the manufacturer's requirements, and then the original pipeline directly returning to the lubricating oil circulation tank at the engine is modified to pass through a temporary filter and then connected to the main engine, and then the entire system is reset after the oil injection meets the cleanliness requirements to complete the injection operation.

[0035] The current oil injection scheme has two major workloads in the installation of temporary pipelines. The first involves the temporary pipe connection at the plate cooler. The two halves of the plate cooler, one for use and one for backup, are arranged face to face, and the inlet and outlet are two tees connected to the inlet and outlet of the two plate coolers and the system respectively. Due to equipment installation reasons, this part of the pipeline is very difficult to disassemble and assemble, and it often takes a whole day to install the bypass pipe, and the subsequent reset also takes a lot of time; the second is the pipeline at the temporary filter installed before the machine, which often requires the installation of more than ten temporary pipes, and the workload is also very huge.

[0036] In addition, due to the high requirements for pipeline cleaning and the inevitable cross-operation during pipeline installation, the pipeline cannot be guaranteed to be sufficiently clean, so it takes a long time to oil the pipeline to achieve the required cleanliness requirements.

[0037] In summary, in the current main lubricating oil injection operation, there is a lack of a reasonable pipeline design scheme to reduce the installation work of temporary pipes, and there is also a lack of a simple, fast and effective method to achieve the purpose of quickly cleaning the main lubricating oil pipeline.

[0038] Based on the above situation, there is an urgent need to provide a device for assisting in cleaning the fuel pipeline of a ship, which can clean it more efficiently.

[0039] The present application provides a device for cleaning a main lubricating oil system of a ship, which can clean the main lubricating oil system of the ship simply, quickly and effectively.

[0040] The present application provides a device for cleaning a main lubricating oil system of a ship, wherein the main lubricating oil system of the ship comprises a peripheral pipeline and a main engine, wherein the peripheral pipeline is connected to the lubricating oil circulation tank of the main engine, wherein the peripheral pipeline comprises a first cooler 1, a second cooler 2 and a first pipeline 3, wherein the oil inlet pipeline of the first cooler 1 and the oil inlet pipeline of the second cooler 2 are connected via a first four-way joint 4, wherein the oil outlet pipeline of the first cooler 1 and the oil outlet pipeline of the second cooler 2 are connected via a second four-way joint 5, wherein one end of a cleaning component 6 is connected to the second four-way joint 5, wherein the first pipeline 3 is connected to the first four-way joint 4 and the second four-way joint 5, wherein the other end of the cleaning component 6 is connected to an inlet end of a lubricating oil circulation tank 7 of the main engine, wherein an outlet end of the lubricating oil circulation tank 7 of the main engine is connected to the first four-way joint 4.

[0041] In some optional embodiments, the cleaning assembly 6 includes a filter 61, a fine filter 62, a second pipeline 63, and a third pipeline 64. The filter 61 is connected to the second four-way connector 5. The second pipeline 63 is respectively connected to the filter 61 and the third pipeline 64. The third pipeline 64 is connected to the second pipeline 63 and the fine filter 62. The fine filter 62 is connected to the inlet end of the main engine oil circulation compartment 7.

[0042] In some optional embodiments, a stop valve is provided on the oil inlet pipeline of the first cooler 1 .

[0043] In some optional embodiments, a stop valve is provided on the oil inlet pipeline of the second cooler 2 .

[0044] In some optional embodiments, a stop valve is provided on the oil outlet pipeline of the first cooler 1 .

[0045] In some optional embodiments, a stop valve is provided on the oil outlet pipeline of the second cooler 2 .

[0046] The present application provides a method for cleaning a main lubricating oil system of a ship, which is realized by the device for cleaning a main lubricating oil system of a ship described in any one of the above items, comprising: connecting a first pipeline 3 to a first four-way joint 4 and a second four-way joint 5 to optimize the peripheral pipeline; designing a cleaning component; connecting the peripheral pipeline, the cleaning component and the main engine lubricating oil circulation tank 7 together; disconnecting the oil inlet pipeline of the first cooler 1, the oil inlet pipeline of the second cooler 2, the oil outlet pipeline of the first cooler 1 and the oil outlet pipeline of the second cooler 2; connecting the first pipeline 3, the cleaning component and the main engine The lubricating oil circulation compartment 7 is cleaned for the first time using the peripheral pipelines; the first pipeline 3 is removed, the oil inlet pipeline of the first cooler 1 and the oil outlet pipeline of the first cooler 1 are started, the oil inlet pipeline of the second cooler 2 and the oil outlet pipeline of the second cooler 2 are disconnected, and then the oil inlet pipeline of the first cooler 1 and the oil outlet pipeline of the first cooler 1 are disconnected, and the oil inlet pipeline of the second cooler 2 and the oil outlet pipeline of the second cooler 2 are started to clean for the second time using the peripheral pipelines; the structure of the cleaning component is adjusted to clean the main engine; the cleaning component is removed to reset the peripheral pipelines and the main engine.

[0047] Optimize the layout of the pipelines, and optimize the layout of the pipelines between the first cooler 1, the second cooler 2, the filter 61 and the main oil inlet port, which have a large workload of connecting temporary pipes during the subsequent main oil injection process, so as to reduce the workload of subsequent temporary pipe installation. Figure 2 and Figure 3 shown.

[0048] Use the first step of the peripheral pipeline to add oil, connect the first cooler 1, the second cooler 2 and other equipment that needs to be bypassed, and start the two main lubricating oil pumps to add oil through the first pipeline 3, the cleaning component and the port of the main engine lubricating oil circulation tank 7 to meet the cleanliness requirements. For example, Figure 4 and Figure 5 shown.

[0049] Use the second step of the peripheral pipeline to add oil, remove the first pipeline 3 between the first four-way joint 4 and the second four-way joint 5, keep other pipelines unchanged, start the two main lubricating oil pumps to add oil until the lubricating oil meets the cleanliness requirements. Figure 5 shown.

[0050] Oil the main engine, keep the filter 61 in place, use the existing pipeline to replace the engine pipeline, and then start the two main lubricating oil pumps to oil the lubricating oil until it reaches the cleanliness requirement, and then the main engine oiling is completed. Figure 6 shown.

[0051] The filter 61 is removed, the second pipeline 63 and the third pipeline 64 are connected, the connection relationship between the peripheral pipeline and the main engine is reset, and the oil injection work is completed.

[0052] Further, the step of optimizing the pipeline layout includes: according to the layout of the outlet pipeline of the first cooler 1, adding the first four-way joint 4 and the second four-way joint 5, and equipping the first pipeline 3 with a blind flange to seal the position where the first four-way joint 4 and the second four-way joint 5 are connected. Measure the inlet and outlet flange size and relative position of the filter 61 used for oil injection. Design a second pipeline 63, design a second pipeline 63 at the original straight pipe section at the inlet of the main lubricating oil pipeline into the main engine, and the flange size and relative position of the second pipeline 63 are consistent with those of the temporary filter, see Figure 3 Design the third pipeline 64, and design another fixed depth pipe after the designed fixed depth pipe to connect to the main engine inlet or the pipe entering the main engine, see Figure 3 Install the pipes according to the designed pipeline. When installing the second pipeline 63, first place the filter 61 at the installation position, and calibrate and make the pipe on site to connect the filter outlet to the main engine inlet. Figure 6 After the second pipeline 63 and the third pipeline are connected, the filter 61 is removed and the third pipeline 64 is calibrated on site. Figure 3 .

[0053] Furthermore, in the first step of the oil injection operation of the peripheral pipeline, the method of use includes the following steps: disconnect the stop valves of the oil inlet pipeline of the first cooler 1, the oil inlet pipeline of the second cooler 2, the oil outlet pipeline of the first cooler 1 and the oil outlet pipeline of the second cooler 2, remove the first pipeline 3 and the positions connected to the first four-way joint 4 and the second four-way joint 5 respectively, and equip the blind flanges for plugging. Use the first pipeline 3 to connect the two interfaces with the blind flanges removed, see Figure 4 Remove the third pipe at the same position of the main engine oil inlet and filter 61, and install a temporary filter at this position. Figure 5 Remove the third pipeline 64, connect it in series to the outlet of the filter 61, then connect the temporary fine filter 62, and then connect the third pipeline 64 to the main engine oil circulation tank 7, see Figure 5 . Start the main lubricating oil pump and perform oiling work according to the normal process.

[0054] In the third step, the second step of oiling the peripheral pipeline begins, that is, the first pipeline 3 at the first cooler 1 and the second cooler 2 is removed, and the dead corner of the flow inside the first pipeline 3 is cleaned, and the blind flange is reinstalled, and the inlet and outlet valves of the first cooler 1 and the second cooler 2 are opened alternately, and then the main lubricating oil pump is started to perform regular oiling work, see Figure 2 .

[0055] Oiling the main engine, that is, keeping the filter 61 in place, removing the temporary fine filter 62, and then connecting the second pipeline to the main engine inlet, start the regular oiling work. Figure 6 .

[0056] In some optional embodiments, the step of designing the cleaning component includes designing the second pipeline 63 so that one end of the second pipeline 63 corresponds to the outlet end of the filter 61; designing the third pipeline 64 so that one end of the third pipeline 64 corresponds to the outlet end of the filter 61, and the other end is consistent with the inlet end of the lubricating oil circulation tank of the main engine.

[0057] In some optional embodiments, the structure of the cleaning component is adjusted, and the step before cleaning the host further includes removing the first pipeline 3 and cleaning the first pipeline 3.

[0058] In some optional embodiments, the structure of the cleaning component is adjusted, and the steps of cleaning the main engine include removing the first pipeline 3 and the fine filter 62, connecting the second pipeline 63 to the filter 61 and the inlet end of the main engine lubricating oil circulation compartment 7, and connecting the outlet end of the main engine lubricating oil circulation compartment 7 to the filter 61.

[0059] The present application provides a method for assisting in cleaning the fuel pipeline of a ship, which greatly reduces the number of temporary pipes for oiling, reduces the workload of temporary pipe installation before oiling, shortens the installation cycle, and thus shortens the entire oiling cycle; shortens the oiling cycle of the ship's main lubricating oil, reduces the number of temporary pipes used, reduces the garbage caused by temporary pipes in the system, and greatly shortens the overall oiling cycle. It can greatly improve the filtration efficiency, while not affecting the cleanliness inspection at the temporary filter, greatly improve the oiling efficiency, and shorten the oiling cycle; the device is simple and convenient to use and has a wide range of applications.

[0060] In the present invention, the term "plurality" means at least two or more than two, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0061] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0062] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for cleaning a main lubricating oil system of a ship, wherein the main lubricating oil system of the ship comprises a peripheral pipeline and a main engine, wherein the peripheral pipeline is connected to a lubricating oil circulation tank of the main engine, and wherein: The peripheral pipeline comprises a first cooler (1), a second cooler (2) and a first pipeline (3); an oil inlet pipeline of the first cooler (1) and an oil inlet pipeline of the second cooler (2) are connected via a first four-way joint (4); an oil outlet pipeline of the first cooler (1) and an oil outlet pipeline of the second cooler (2) are connected via a second four-way joint (5); the first pipeline (3) connects the first four-way joint (4) and the second four-way joint (5); one end of a cleaning component (6) is connected to the second four-way joint (5); the other end of the cleaning component (6) is connected to an inlet end of the main engine lubricating oil circulation compartment (7); and an outlet end of the main engine lubricating oil circulation compartment (7) is connected to the first four-way joint (4).

2. The device for cleaning the main lubricating oil system of a ship according to claim 1, characterized in that: The cleaning assembly (6) comprises a filter (61), a fine filter (62), a second pipeline (63), and a third pipeline (64); the filter (61) is connected to the second four-way joint (5); the second pipeline (63) is respectively connected to the filter (61) and the third pipeline (64); the third pipeline (64) is connected to the second pipeline (63) and the fine filter (62); and the fine filter (62) is connected to the inlet end of the main engine lubricating oil circulation compartment (7).

3. The device for cleaning the main lubricating oil system of a ship according to claim 2, characterized in that: The oil inlet pipeline of the first cooler (1) is provided with a stop valve.

4. The device for cleaning the main lubricating oil system of a ship according to claim 3, characterized in that: The oil inlet pipeline of the second cooler (2) is provided with a stop valve.

5. The device for cleaning the main lubricating oil system of a ship according to claim 3, characterized in that: The oil outlet pipeline of the first cooler (1) is provided with a stop valve.

6. The device for cleaning the main lubricating oil system of a ship according to claim 3, characterized in that: The oil outlet pipeline of the second cooler (2) is provided with a stop valve.

7. A method for cleaning a main lubricating oil system of a ship, which is achieved by using the device for cleaning a main lubricating oil system of a ship according to any one of claims 1 to 6, characterized in that: include: The first pipeline connects the first four-way joint and the second four-way joint to optimize the peripheral pipeline; Design cleaning components; Connecting the peripheral pipeline, the cleaning assembly and the main engine oil circulation tank together; Disconnecting the oil inlet pipeline of the first cooler, the oil inlet pipeline of the second cooler, the oil outlet pipeline of the first cooler, and the oil outlet pipeline of the second cooler; Connecting the first pipeline, the cleaning assembly and the main engine lubricating oil circulation compartment to perform a first cleaning using the peripheral pipeline; Dismantle the first pipeline, start the oil inlet pipeline of the first cooler and the oil outlet pipeline of the first cooler, disconnect the oil inlet pipeline of the second cooler and the oil outlet pipeline of the second cooler, then disconnect the oil inlet pipeline of the first cooler and the oil outlet pipeline of the first cooler, start the oil inlet pipeline of the second cooler and the oil outlet pipeline of the second cooler, so as to use the peripheral pipeline for the second cleaning; Adjust the structure of the cleaning component to clean the host; Remove the cleaning assembly and reset the peripheral pipeline and the main unit.

8. The method for cleaning the main lubricating oil system of a ship according to claim 7, characterized in that: The step of designing the cleaning assembly includes designing the second pipeline so that one end of the second pipeline corresponds to the outlet end of the filter; The third pipeline is designed so that one end of the third pipeline is consistent with the outlet end of the filter and the other end is consistent with the inlet end of the lubricating oil circulation tank of the main engine.

9. The method for cleaning the main lubricating oil system of a ship according to claim 8, characterized in that: The step of adjusting the structure of the cleaning component before cleaning the host further includes removing the first pipeline and cleaning the first pipeline.

10. The method for cleaning the main lubricating oil system of a ship according to claim 9, characterized in that: The structure of the cleaning component is adjusted, and the step of cleaning the main engine includes removing the first pipeline and the fine filter, the second pipeline connects the filter and the inlet end of the main engine lubricating oil circulation tank, and the outlet end of the main engine lubricating oil circulation tank is connected to the filter.

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