Apparatus and methods for cleaning the main lubricating oil system of a ship

Abstract

This application provides an apparatus and method for assisting in cleaning ship fuel lines, comprising: connecting an external pipeline to the main engine's lubricating oil circulation tank; the external pipeline including a first cooler, a second cooler, and a first pipeline; the oil inlet pipelines of the first cooler and the second cooler being connected via a first four-way connector; the oil outlet pipelines of the first cooler and the second cooler being connected via a second four-way connector; the first pipeline being connected to the first four-way connector and the second four-way connector; the other end of the cleaning component being connected to the inlet end of the main engine's lubricating oil circulation tank; and the outlet end of the main engine's lubricating oil circulation tank being connected to the first four-way connector. This apparatus significantly reduces the number of temporary oil injection pipes, reduces the workload of installing temporary pipes before oil injection, shortens the installation cycle, and thus shortens the overall oil injection cycle; it shortens the ship's main lubricating oil injection cycle, reduces the number of temporary pipes used, reduces the amount of debris in the system caused by temporary pipes, and significantly shortens the overall oil injection cycle.

Description

Technical Field

[0001] This invention relates to the field of shipbuilding technology, and more specifically, to an apparatus and method for cleaning a ship's main lubricating oil system. Background Technology

[0002] The main lubrication system is a crucial component of a marine engine, responsible for multiple functions including lubrication, cooling, and hydraulic drive. Therefore, strict control of system cleanliness is essential to prevent bearing damage or blockage of drive components due to unclean lubricating oil or other contaminants, which could render the engine unusable.

[0003] Currently, in actual production, the cleanliness of the main lubricating oil system is controlled by main lubricating oil injection, which generally consists of two stages: external pipeline injection and inlet oil injection. External pipeline injection involves two steps: First, bypassing the two plate coolers and the lubricating oil self-cleaning filter within the system, then turning the inlet pipe out and connecting it to the temporary filter via a temporary pipe before returning to the lubricating oil circulation chamber, then injecting oil until the required cleanliness is achieved. Second, after confirming the cleanliness in the first step, resetting the pipeline at the plate cooler and injecting oil again until the required cleanliness is achieved. Inlet oil injection, based on the external pipeline injection, involves placing a baffle plate inside the main unit according to the manufacturer's requirements, then modifying the original direct return pipeline to the lubricating oil circulation chamber at the inlet to connect to the main unit via a temporary filter, then injecting oil until the required cleanliness is achieved, and finally resetting the entire system to complete the injection operation.

[0004] The current oil injection scheme presents two major challenges in the installation of temporary pipelines. First, it involves the temporary pipe connections at the plate coolers. The two plate coolers, one in use and one on standby, are arranged face-to-face, with their inlets and outlets connected by two T-junctions to the two plate coolers and the system's inlet and outlet, respectively. Due to equipment installation constraints, disassembling and reassembling this part of the pipeline is extremely difficult, often requiring a full day to install the bypass pipes, and subsequent resetting also takes a significant amount of time. Second, the pipelines at the temporary filter installation point at the inlet of the machine often require the installation of more than ten temporary pipes, resulting in a substantial workload.

[0005] In addition, due to the high requirements for pipeline cleanliness, and the inevitable cross-operations during pipeline installation which make it impossible to guarantee sufficient cleanliness inside the pipeline, it also takes a long time to achieve the required cleanliness level when adding oil.

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

[0007] Based on the above situation, there is an urgent need to provide a device that can assist in cleaning ship fuel lines and achieve more efficient cleaning. Summary of the Invention

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

[0009] This application provides an apparatus for assisting in cleaning a ship's fuel oil pipeline. The ship's main lubricating oil system includes peripheral pipelines and a main engine. The peripheral pipelines are connected to the main engine's lubricating oil circulation chamber. The peripheral pipelines include a first cooler, a second cooler, and a first pipeline. The inlet pipelines of the first cooler and the second cooler are connected via a first four-way connector, and the outlet pipelines of the first cooler and the second cooler are connected via a second four-way connector. The first pipeline connects the first four-way connector and the second four-way connector. One end of the cleaning assembly is connected to the second four-way connector, and the other end of the cleaning assembly is connected to the inlet end of the main engine's lubricating oil circulation chamber. The outlet end of the main engine's lubricating oil circulation chamber is connected to the first four-way connector.

[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 a second four-way connector. The second pipeline is connected to both the filter and the third pipeline. The third pipeline is connected to both the second pipeline and the fine filter. The fine filter is connected to the inlet end of the main engine lubricating oil circulation chamber.

[0011] In some alternative embodiments, a shut-off valve is provided on the oil inlet line of the first cooler.

[0012] In some alternative embodiments, the oil inlet line of the second cooling system is provided with a shut-off valve.

[0013] In some alternative embodiments, a shut-off valve is provided on the oil outlet line of the first cooler.

[0014] In some alternative embodiments, the oil outlet line of the second cooler is provided with a shut-off valve.

[0015] On the other hand, this application provides a method for cleaning a ship's main lubricating oil system, implemented using the apparatus for cleaning a ship's main lubricating oil system as described in any of the above claims, comprising: connecting a first pipeline to a first four-way connector and a second four-way connector to optimize the peripheral pipeline; designing a cleaning assembly; connecting the peripheral pipeline, the cleaning assembly, and the main engine lubricating oil circulation chamber together; disconnecting the oil inlet pipe of the first cooler, the oil inlet pipe of the second cooler, the oil outlet pipe of the first cooler, and the oil outlet pipe of the second cooler; connecting the first pipeline, the cleaning assembly, and the main engine lubricating oil circulation chamber to perform a first cleaning using the peripheral pipeline; removing the first pipeline, activating the oil inlet pipe and the oil outlet pipe of the first cooler, disconnecting the oil inlet pipe and the oil outlet pipe of the second cooler, then disconnecting the oil inlet pipe and the oil outlet pipe of the first cooler, activating the oil inlet pipe and the oil outlet pipe of the second cooler to perform a second cleaning using the peripheral pipeline; adjusting the structure of the cleaning assembly to clean the main engine; removing the cleaning assembly and resetting the peripheral pipeline and the main engine.

[0016] In some optional embodiments, the step of designing the cleaning component includes designing a second pipeline such that one end of the second pipeline corresponds to the filter outlet; and designing a third pipeline such that one end of the third pipeline is aligned with the filter outlet and the other end is aligned with the lubricating oil circulation chamber inlet of the main unit.

[0017] In some optional embodiments, the step of adjusting the structure of the cleaning assembly 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 assembly to clean the main unit includes disconnecting the first pipeline and the fine filter, wherein the second pipeline connects the filter and the inlet end of the main unit's lubricating oil circulation chamber, and the outlet end of the main unit's lubricating oil circulation chamber is connected to the filter.

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

[0020] This application provides a device for assisting in cleaning ship fuel lines, comprising: an external pipeline connected to the main engine's lubricating oil circulation tank; the external pipeline including a first cooler, a second cooler, and a first pipe; the inlet pipes of the first and second coolers being connected via a first four-way connector; the outlet pipes of the first and second coolers being connected via a second four-way connector; the first pipe connecting the first and second four-way connectors; the other end of the cleaning component connecting to the inlet end of the main engine's lubricating oil circulation tank; and the outlet end of the main engine's lubricating oil circulation tank connecting to the first four-way connector. This device significantly reduces the number of temporary fuel injection pipes, reduces the workload of installing temporary pipes before fuel injection, shortens the installation cycle, and thus shortens the overall fuel injection cycle; it shortens the ship's main lubricating oil injection cycle, reduces the number of temporary pipes used, reduces debris in the system caused by temporary pipes, and significantly shortens the overall fuel injection cycle. It can significantly improve filtration efficiency without affecting the cleanliness check of the temporary filter, greatly improving fuel injection efficiency and shortening the fuel injection cycle; the device is simple and convenient to use and has a wide range of applications.

[0021] This application provides a method for assisting in cleaning ship fuel lines. This method significantly reduces the number of temporary fuel injection pipes, reduces the workload of installing temporary pipes before fuel injection, shortens the installation cycle, and thus shortens the overall fuel injection cycle. It also shortens the main lubricating oil injection cycle by reducing the number of temporary pipes used, reducing debris in the system caused by temporary pipes, and significantly shortening the overall fuel injection cycle. It can greatly improve filtration efficiency without affecting the cleanliness inspection of temporary filters, thus greatly improving fuel injection efficiency and shortening the fuel injection cycle. The device is simple and convenient to use and has a wide range of applications. Attached Figure Description

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

[0023] Figure 1 This is a schematic diagram of the structure connecting a conventional first cooler and a second cooler;

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

[0025] Figure 3 This is a schematic diagram of the pipeline for the main lubricating oil to enter the main unit, provided in an embodiment of the present invention.

[0026] Figure 4 This is a schematic diagram of the structure of the peripheral pipeline provided in an embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of filter installation during the oil injection process in the external pipeline, provided in an embodiment of the present invention.

[0028] Figure 6 This is a schematic diagram of the pipeline connection for injecting oil into the main unit, provided in an embodiment of the present invention.

[0029] in, Figures 1-6 The correspondence between the reference numerals and the component names in the attached drawings is as follows:

[0030] 1-First cooler; 2-Second cooler; 3-First pipeline; 4-First four-way connector; 5-Second four-way connector; 6-Cleaning assembly; 61-Filter; 62-Fine filter; 63-Second pipeline; 64-Third pipeline; 7-Main engine lubricating oil circulation chamber. Detailed Implementation

[0031] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0032] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0033] The main lubrication system is a crucial component of a marine engine, responsible for multiple functions including lubrication, cooling, and hydraulic drive. Therefore, strict control of system cleanliness is essential to prevent bearing damage or blockage of drive components due to unclean lubricating oil or other contaminants, which could render the engine unusable.

[0034] Currently, in actual production, the cleanliness of the main lubricating oil system is controlled by main lubricating oil injection, which generally consists of two stages: external pipeline injection and inlet oil injection. External pipeline injection involves two steps: First, bypassing the two plate coolers and the lubricating oil self-cleaning filter within the system, then turning the inlet pipe out and connecting it to the temporary filter via a temporary pipe before returning to the lubricating oil circulation chamber, then injecting oil until the required cleanliness is achieved. Second, after confirming the cleanliness in the first step, resetting the pipeline at the plate cooler and injecting oil again until the required cleanliness is achieved. Inlet oil injection, based on the external pipeline injection, involves placing a baffle plate inside the main unit according to the manufacturer's requirements, then modifying the original direct return pipeline to the lubricating oil circulation chamber at the inlet to connect to the main unit via a temporary filter, then injecting oil until the required cleanliness is achieved, and finally resetting the entire system to complete the injection operation.

[0035] The current oil injection scheme presents two major challenges in the installation of temporary pipelines. First, it involves the temporary pipe connections at the plate coolers. The two plate coolers, one in use and one on standby, are arranged face-to-face, with their inlets and outlets connected by two T-junctions to the two plate coolers and the system's inlet and outlet, respectively. Due to equipment installation constraints, disassembling and reassembling this part of the pipeline is extremely difficult, often requiring a full day to install the bypass pipes, and subsequent resetting also takes a significant amount of time. Second, the pipelines at the temporary filter installation point at the inlet of the machine often require the installation of more than ten temporary pipes, resulting in a substantial workload.

[0036] In addition, due to the high requirements for pipeline cleanliness, and the inevitable cross-operations during pipeline installation which make it impossible to guarantee sufficient cleanliness inside the pipeline, it also takes a long time to achieve the required cleanliness level when adding oil.

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

[0038] Based on the above situation, there is an urgent need to provide a device that can assist in cleaning ship fuel lines and achieve more efficient cleaning.

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

[0040] This application provides an apparatus for cleaning a ship's main lubricating oil system. The ship's main lubricating oil system includes peripheral pipelines and a main engine. The peripheral pipelines are connected to the main engine's lubricating oil circulation chamber. The peripheral pipelines include a first cooler 1, a second cooler 2, and a first pipeline 3. The oil inlet pipelines of the first cooler 1 and the second cooler 2 are connected through a first four-way connector 4. The oil outlet pipelines of the first cooler 1 and the second cooler 2 are connected through a second four-way connector 5. One end of a cleaning component 6 is connected to the second four-way connector 5. The first pipeline 3 is connected to the first four-way connector 4 and the second four-way connector 5. The other end of the cleaning component 6 is connected to the inlet end of the main engine's lubricating oil circulation chamber 7. The outlet end of the main engine's lubricating oil circulation chamber 7 is connected to the first four-way connector 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 connected to the filter 61 and the third pipeline 64 respectively. 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 lubricating oil circulation chamber 7.

[0042] In some alternative embodiments, a shut-off valve is provided on the oil inlet line of the first cooler 1.

[0043] In some alternative embodiments, the oil inlet line of the second cooler 2 is provided with a shut-off valve.

[0044] In some alternative embodiments, a shut-off valve is provided on the oil outlet line of the first cooler 1.

[0045] In some alternative embodiments, the oil outlet line of the second cooler 2 is equipped with a shut-off valve.

[0046] This application provides a method for cleaning a ship's main lubricating oil system, implemented using the apparatus described in any of the preceding claims for cleaning a ship's main lubricating oil system, comprising: connecting a first pipeline 3 to a first four-way connector 4 and a second four-way connector 5 to optimize the peripheral pipeline; designing a cleaning assembly; connecting the peripheral pipeline, the cleaning assembly, 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; and connecting the first pipeline 3, the cleaning assembly, and the main engine. The lubricating oil circulation chamber 7 is cleaned for the first time using the external pipelines; the first pipeline 3 is removed, the oil inlet pipeline and the oil outlet pipeline of the first cooler 1 are started, the oil inlet pipeline and the oil outlet pipeline of the second cooler 2 are disconnected, then the oil inlet pipeline and the oil outlet pipeline of the first cooler 1 are disconnected, and the oil inlet pipeline and the oil outlet pipeline of the second cooler 2 are started to clean for the second time using the external pipelines; the structure of the cleaning assembly is adjusted to clean the main unit; the cleaning assembly is removed and the external pipelines and the main unit are reset.

[0047] Optimize pipeline layout: For pipelines connecting the first cooler 1, second cooler 2, filter 61, and the main lubricating oil inlet port, which involve significant temporary pipe installation work during the subsequent main lubricating oil injection process, optimize the layout to reduce the workload of subsequent temporary pipe installation. For example, Figure 2 and Figure 3 As shown.

[0048] The first step involves using external pipelines to inject oil, connecting the first cooler 1, the second cooler 2, and other equipment requiring bypass. Through the ports of the first pipeline 3, the cleaning assembly, and the main engine lubricating oil circulation chamber 7, two main lubricating oil pumps are started to inject oil until the required cleanliness is achieved. For example, Figure 4 and Figure 5 As shown.

[0049] In the second step of oil injection using the external pipeline, disconnect the first pipeline 3 between the first four-way connector 4 and the second four-way connector 5, keeping other pipelines unchanged, and start the two main lubricating oil pumps to inject oil until the lubricating oil reaches the required cleanliness. Figure 5 As shown.

[0050] Oil the main unit, keeping filter 61 in the same position. Modify the main unit pipeline using existing piping, then start both main lubricating oil pumps to add oil until the lubricating oil reaches the required cleanliness. The oiling process for the main unit is then complete. Figure 6 As shown.

[0051] Remove filter 61, connect second pipeline 63 and third pipeline 64, reset the connection between the external pipeline and the main unit, and the oil filling operation is completed.

[0052] Further steps in optimizing the pipeline layout include: Based on the outlet pipeline layout of the first cooler 1, adding a first four-way connector 4 and a second four-way connector 5; installing blind flanges to seal the connection points of the first pipeline 3 with the first four-way connector 4 and the second four-way connector 5 respectively. Measuring the inlet and outlet flange dimensions and relative positions of the filter 61 used for oil injection. Designing a second pipeline 63: designing a second pipeline 63 at the original straight section of the main lubricating oil pipeline inlet to the main unit. The flange dimensions and relative positions of the second pipeline 63 are consistent with the temporary filter, see [reference needed]. Figure 3 Design a third pipeline 64, following the designed fixed-depth pipeline, to connect to the main unit inlet or the pipeline entering the main unit. See [reference needed]. Figure 3 Install the pipes according to the design pipeline. When installing the second pipeline 63, first place the filter 61 at the installation location, and then fabricate a pipe on-site to connect the filter outlet to the main unit inlet. See [link to documentation]. Figure 6 After connecting the second pipe 63 and the third pipe, remove the filter 61 and begin on-site calibration of the third pipe 64. (See...) Figure 3 .

[0053] Furthermore, in the first step of the external pipeline oil filling operation, the method includes the following steps: disconnect the oil inlet pipe of the first cooler 1, the oil inlet pipe of the second cooler 2, the oil outlet pipe of the first cooler 1, and the shut-off valves of the oil outlet pipes of the second cooler 2; remove the blind flanges from the locations where the first pipeline 3 connects to the first four-way connector 4 and the second four-way connector 5, respectively. Connect the two interfaces with the removed blind flanges using the first pipeline 3, see... Figure 4 Remove the third pipe, which is located at the same position as the main unit's lubricating oil inlet and the filter 61 inlet / outlet. Install a temporary filter at this location. (See...) Figure 5 Disconnect the third pipe 64 and connect it in series to the outlet of filter 61, then connect the temporary fine filter 62, and then connect the third pipe 64 to the main engine lubricating oil circulation chamber 7. See [link to relevant documentation]. Figure 5 Start the main lubricating oil pump and perform oil injection according to the standard procedure.

[0054] In the third step, the second step of oil injection into the external pipeline begins. This involves dismantling the first pipeline 3 at the location of the first cooler 1 and the second cooler 2, cleaning the dead zones inside the first pipeline 3, reinstalling the blind flange, and alternately opening the inlet and outlet valves of the first cooler 1 and the second cooler 2. Then, the main lubricating oil pump is activated for routine oil injection. See [link to relevant documentation]. Figure 2 .

[0055] To begin oil injection for the main unit, keep filter 61 in place, remove the temporary fine filter 62, then connect the second pipeline to the main unit inlet, and begin the routine oil injection process. (See...) Figure 6 .

[0056] In some alternative embodiments, the steps of designing the cleaning assembly include designing a second pipe 63 such that one end of the second pipe 63 corresponds to the outlet end of the filter 61; and designing a third pipe 64 such that one end of the third pipe 64 is aligned with the outlet end of the filter 61, and the other end is aligned with the inlet end of the lubricating oil circulation chamber of the main unit.

[0057] In some optional embodiments, the structure of the cleaning assembly is adjusted, and the steps before cleaning the host also include removing the first pipe 3 and cleaning the first pipe 3.

[0058] In some optional embodiments, adjusting the structure of the cleaning assembly to clean the main unit includes 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 unit lubricating oil circulation chamber 7, and connecting the outlet end of the main unit lubricating oil circulation chamber 7 to the filter 61.

[0059] This application provides a method for assisting in cleaning ship fuel lines. This method significantly reduces the number of temporary fuel injection pipes, reduces the workload of installing temporary pipes before fuel injection, shortens the installation cycle, and thus shortens the overall fuel injection cycle. It also shortens the main lubricating oil injection cycle by reducing the number of temporary pipes used, reducing debris in the system caused by temporary pipes, and significantly shortening the overall fuel injection cycle. It can greatly improve filtration efficiency without affecting the cleanliness inspection of temporary filters, thus greatly improving fuel injection efficiency and shortening the fuel injection cycle. The device is simple and convenient to use and has a wide range of applications.

[0060] In this invention, the term "multiple" refers to at least two or more, unless otherwise explicitly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0061] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0062] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An apparatus for cleaning a ship's main lubricating oil system, the main lubricating oil system comprising peripheral piping and a main engine, the peripheral piping being connected to the main engine lubricating oil circulation tank (7) of the main engine, characterized in that, The peripheral pipeline includes a first cooler (1), a second cooler (2), and a first pipeline (3). The oil inlet pipeline of the first cooler (1) and the oil inlet pipeline of the second cooler (2) are connected through a first four-way connector (4). The oil outlet pipeline of the first cooler (1) and the oil outlet pipeline of the second cooler (2) are connected through a second four-way connector (5). The first pipeline (3) connects the first four-way connector (4) and the second four-way connector (5). One end of the cleaning component (6) is connected to the second four-way connector (5). The other end of the cleaning component (6) is connected to the inlet end of the main engine lubricating oil circulation chamber (7). The outlet end of the main engine lubricating oil circulation chamber (7) is connected to the first four-way connector (4).

2. The apparatus for cleaning the main lubricating oil system of a ship according to claim 1, characterized in that, 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 connected to the filter (61) and the third pipeline (64) respectively. 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 lubricating oil circulation chamber (7).

3. The apparatus for cleaning the main lubricating oil system of a ship according to claim 2, characterized in that, The oil inlet pipe of the first cooler (1) is equipped with a shut-off valve.

4. The apparatus for cleaning the main lubricating oil system of a ship according to claim 3, characterized in that, The oil inlet pipe of the second cooler (2) is equipped with a shut-off valve.

5. The apparatus for cleaning the main lubricating oil system of a ship according to claim 3, characterized in that, The oil outlet line of the first cooler (1) is equipped with a shut-off valve.

6. The apparatus for cleaning a ship's main lubricating oil system according to claim 3, characterized in that, The oil outlet line of the second cooler (2) is equipped with a shut-off valve.

7. A method for cleaning a ship's main lubricating oil system, implemented using the apparatus for cleaning a ship's main lubricating oil system as described in any one of claims 2 to 6, characterized in that... include: The first pipeline connects the first four-way connector and the second four-way connector to optimize the external pipeline; Design cleaning components; Connect the peripheral pipelines, the cleaning assembly, and the main engine oil circulation chamber together; disconnect the oil inlet pipes of the first cooler, the second cooler, the first cooler, and the second cooler; connect the first pipelines, the cleaning assembly, and the main engine oil circulation chamber to perform a first cleaning using the peripheral pipelines; remove the first pipeline, start the oil inlet and outlet pipes of the first cooler, disconnect the oil inlet and outlet pipes of the second cooler, then disconnect the oil inlet and outlet pipes of the first cooler, and start the oil inlet and outlet pipes of the second cooler to perform a second cleaning using the peripheral pipelines; adjust the structure of the cleaning assembly to clean the main engine; remove the cleaning assembly and reset the peripheral pipelines and the main engine.

8. The method for cleaning the main lubricating oil system of a ship according to claim 7, characterized in that, The steps of designing the cleaning component include designing a second pipeline such that one end of the second pipeline corresponds to the filter outlet end; Design a third pipeline so that one end of the third pipeline is connected to the outlet end of the filter, and the other end is connected to the inlet end of the lubricating oil circulation chamber of the main unit.

9. The method for cleaning a ship's main lubricating oil system according to claim 8, characterized in that, The steps before cleaning the host by adjusting the structure of the cleaning component also include removing the first pipeline and cleaning the first pipeline.

10. The method for cleaning a ship's main lubricating oil system according to claim 9, characterized in that, The step of adjusting the structure of the cleaning assembly to clean the main unit includes: removing the first pipeline and the fine filter; connecting the second pipeline to the filter and the inlet end of the main unit's lubricating oil circulation chamber; and connecting the outlet end of the main unit's lubricating oil circulation chamber to the filter.

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