Methanol transfer and storage device of marine low-speed methanol diesel engine and operation method

Abstract

The invention relates to the technical field of marine methanol transfer and storage devices, and particularly discloses a methanol transfer and storage device of a marine low-speed methanol diesel engine and an operation method, and the methanol transfer and storage device of the marine low-speed methanol diesel engine comprises a support frame, a storage tank, an inlet conveying assembly, an outlet conveying assembly and a discharge conveying assembly. According to the methanol transfer and storage device of the marine low-speed methanol diesel engine, methanol is introduced into the storage tank through the methanol pipeline under the action of gravity, and meanwhile, gas in the storage tank is discharged into a purging system of a ship or the diesel engine through the outlet conveying assembly; when the storage tank is filled with methanol, the methanol can be transferred into an external methanol tank of a ship, methanol steam and methanol liquid cannot flow out in the whole methanol transferring process, the safety of the ship and personnel is ensured, and the problem that in the prior art, a methanol transferring and storing device for the marine low-speed methanol diesel engine does not exist is effectively solved.

Description

Technical Field

[0001] This invention relates to the technical field of marine methanol transfer and storage devices, and in particular to a methanol transfer and storage device and operating method for a marine low-speed methanol diesel engine. Background Technology

[0002] Currently, methanol is gradually replacing diesel as a clean fuel in marine low-speed diesel engines. While methanol offers advantages such as economy, environmental friendliness, and high combustion efficiency, it also has drawbacks: it is volatile, its gas is toxic, and its liquid is highly corrosive, posing health risks through inhalation or contact. Before disassembling and inspecting methanol lines and combustion components in low-speed methanol diesel engines, any residual methanol fuel in the lines must be emptied. Furthermore, given the volatility and corrosiveness of methanol, it needs to be stored in a sealed container. A specialized methanol transfer and storage device is required when emptying the methanol lines of a low-speed methanol diesel engine; however, current technology lacks a methanol transfer and storage device specifically designed for marine low-speed methanol diesel engines. Therefore, there is an urgent need to design a methanol transfer and storage device and operating method for marine low-speed methanol diesel engines to address these issues. Summary of the Invention

[0003] The purpose of this invention is to provide a methanol transfer and storage device and operating method for marine low-speed methanol diesel engines, so as to solve the problem that the prior art does not have a methanol transfer and storage device for marine low-speed methanol diesel engines.

[0004] On one hand, the present invention provides a methanol transfer and storage device for a marine low-speed methanol diesel engine. The device includes: a support frame disposed below the methanol pipeline of the methanol diesel engine; a storage tank disposed within the cavity of the support frame; an inlet conveying assembly, one end of which is connected to the cavity of the storage tank, and the other end of which is responsively connected to the methanol pipeline; an outlet conveying assembly, one end of which is connected to the top of the storage tank, and the other end of which is responsively connected to the purging system of the methanol diesel engine; and a venting conveying assembly, one end of which is connected to the bottom of the storage tank, and the other end of which is responsively connected to an external methanol tank.

[0005] As an optional technical solution for methanol transfer and storage devices for marine low-speed methanol diesel engines, the inlet conveying assembly includes an inlet conveying pipeline and an inlet control valve. One end of the inlet conveying pipeline passes through the cavity of the storage tank and extends to the bottom of the storage tank cavity. The other end of the inlet conveying pipeline is connected to the methanol pipeline. The inlet control valve is located in the inlet conveying pipeline and is used to control the on / off connection between the inlet conveying pipeline and the methanol pipeline.

[0006] As an optional technical solution for methanol transfer and storage devices for marine low-speed methanol diesel engines, the inlet control valve is located in the cavity of the support frame.

[0007] As an optional technical solution for methanol transfer and storage devices for marine low-speed methanol diesel engines, the outlet conveying assembly includes an outlet conveying pipeline and an outlet control valve. One end of the outlet conveying pipeline is connected to the top of the storage tank, and the other end of the outlet conveying pipeline is connected to the purging system. The outlet control valve is located in the outlet conveying pipeline and is used to control the on / off connection between the outlet conveying pipeline and the purging system.

[0008] As an optional technical solution for methanol transfer and storage devices for marine low-speed methanol diesel engines, the outlet control valve is located in the cavity of the support frame.

[0009] As an optional technical solution for methanol transfer and storage devices for marine low-speed methanol diesel engines, the venting and conveying assembly includes a venting and conveying pipeline and a venting control valve. One end of the venting and conveying pipeline is connected to the bottom of the storage tank, and the other end of the venting and conveying pipeline is connected to the external methanol tank. The venting control valve is installed in the venting and conveying pipeline and is used to control the connection and disconnection between the venting and conveying pipeline and the external methanol tank.

[0010] As an optional technical solution for methanol transfer and storage devices for marine low-speed methanol diesel engines, the venting control valve is located in the cavity of the support frame.

[0011] As an optional technical solution for a methanol transfer and storage device for a marine low-speed methanol diesel engine, the methanol transfer and storage device for the marine low-speed methanol diesel engine also includes a safety valve, which is installed on the top of the storage tank and is used to monitor the pressure inside the storage tank cavity.

[0012] As an optional technical solution for a methanol transfer and storage device for a marine low-speed methanol diesel engine, the methanol transfer and storage device for the marine low-speed methanol diesel engine also includes an observation window, which is installed in the storage tank and used to observe the methanol level in the storage tank.

[0013] On the other hand, the present invention provides an operating method for a methanol transfer and storage device for a marine low-speed methanol diesel engine, applicable to the methanol transfer and storage device for a marine low-speed methanol diesel engine in any of the above-mentioned embodiments. The operating method of the methanol transfer and storage device for the marine low-speed methanol diesel engine includes: When methanol is introduced: First, connect the other end of the inlet conveying assembly to the methanol pipeline, and then connect the other end of the outlet conveying assembly to the purging system so that methanol gas enters the storage tank. The methanol level in the storage tank is observed through the observation window of the methanol transfer and storage device of the marine low-speed methanol diesel engine. If the preset position is reached, the other end of the inlet conveying component is disconnected from the methanol pipeline, and the other end of the outlet conveying component is disconnected from the purging system. When in methanol export mode: Check if the external methanol tank is under normal pressure; If the external methanol tank is under normal pressure, first connect the other end of the venting and conveying assembly to the external methanol tank, and then connect the other end of the outlet conveying assembly to the purging system so that the methanol in the storage tank flows out. After the methanol in the storage tank is emptied, first disconnect the other end of the discharge conveying assembly from the external methanol tank, and then disconnect the other end of the outlet conveying assembly from the purging system.

[0014] The beneficial effects of this invention are as follows: This invention provides a methanol transfer and storage device for a marine low-speed methanol diesel engine. The device includes a support frame, a storage tank, an inlet conveying assembly, an outlet conveying assembly, and a venting conveying assembly. Using this invention, the support frame is first positioned below the lowest point of the methanol pipeline in the methanol diesel engine. When residual methanol needs to be introduced into the pipeline, the inlet conveying assembly is connected to the methanol pipeline, and the outlet conveying assembly is connected to the purging system. Residual methanol in the pipeline flows into the storage tank. When the methanol level reaches a designated position, the inlet conveying assembly and the methanol pipeline are disconnected, and then the outlet conveying assembly and the purging system are disconnected. When residual methanol needs to be discharged from the pipeline, the venting conveying assembly is connected to an external methanol tank, and then the outlet conveying assembly is connected to the purging system. Methanol in the storage tank flows to the external methanol tank by gravity. After the methanol is emptied, the venting conveying assembly and the external methanol tank are disconnected, and then the outlet conveying assembly and the purging system are disconnected. The methanol transfer and storage device for marine low-speed methanol diesel engines of the present invention utilizes gravity to introduce methanol into a storage tank through a methanol pipeline. Simultaneously, the gas in the storage tank is discharged to the purging system of the ship or diesel engine through an outlet conveying component. When the storage tank is full of methanol, the methanol can be transferred to an external methanol tank on the ship. No methanol vapor or methanol liquid will be released during the entire methanol transfer process, ensuring the safety of the ship and personnel. This effectively solves the problem that the prior art does not have a methanol transfer and storage device for marine low-speed methanol diesel engines. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of the methanol transfer and storage device for a marine low-speed methanol diesel engine in an embodiment of the present invention.

[0016] In the picture: 1. Support frame; 2. Storage tanks; 3. Imported conveying components; 31. Imported conveying pipelines; 32. Imported control valves; 4. Outlet conveying assembly; 41. Outlet conveying pipeline; 42. Outlet control valve; 5. Relief and conveying assembly; 51. Relief and conveying pipeline; 52. Relief control valve; 6. Safety valve; 7. Observation window. Detailed Implementation

[0017] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Furthermore, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0019] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0021] like Figure 1As shown, this embodiment provides a methanol transfer and storage device for a marine low-speed methanol diesel engine. The device includes a support frame 1, a storage tank 2, an inlet conveying assembly 3, an outlet conveying assembly 4, and a venting conveying assembly 5. The support frame 1 is positioned below the methanol pipeline of the methanol diesel engine; the storage tank 2 is housed within the cavity of the support frame 1; one end of the inlet conveying assembly 3 is connected to the cavity of the storage tank 2, and the other end is configurably connected to the methanol pipeline; one end of the outlet conveying assembly 4 is connected to the top of the storage tank 2, and the other end is configurably connected to the purging system of the methanol diesel engine; one end of the venting conveying assembly 5 is connected to the bottom of the storage tank 2, and the other end is configurably connected to an external methanol tank.

[0022] The methanol transfer and storage device for a marine low-speed methanol diesel engine of the present invention first places the support frame 1 below the lowest point of the methanol pipeline of the methanol diesel engine. When it is necessary to introduce residual methanol in the methanol pipeline, the inlet conveying component 3 is connected to the methanol pipeline, and the outlet conveying component 4 is connected to the purging system. At this time, the residual methanol in the methanol pipeline will flow into the storage tank 2. When the methanol level reaches the designated position, the inlet conveying component 3 and the methanol pipeline are disconnected first, and the outlet conveying component 4 and the purging system are disconnected. When it is necessary to discharge the residual methanol in the methanol pipeline, the discharge conveying component 5 is connected to the external methanol tank, and the outlet conveying component 4 is connected to the purging system. At this time, the methanol in the storage tank 2 will flow to the external methanol tank by gravity. When the methanol is emptied, the discharge conveying component 5 is disconnected from the external methanol tank first, and the outlet conveying component 4 is disconnected from the purging system. The methanol transfer and storage device for marine low-speed methanol diesel engines of the present invention utilizes gravity to introduce methanol into storage tank 2 through a methanol pipeline. At the same time, the gas in storage tank 2 is discharged to the purging system of the ship or diesel engine through the outlet conveying component 4. When storage tank 2 is full of methanol, the methanol can be transferred to an external methanol tank on the ship. No methanol vapor or methanol liquid will be released during the entire methanol transfer process, ensuring the safety of the ship and personnel. This effectively solves the problem that the prior art does not have a methanol transfer and storage device for marine low-speed methanol diesel engines.

[0023] In some embodiments, the inlet delivery assembly 3 includes an inlet delivery pipeline 31 and an inlet control valve 32. One end of the inlet delivery pipeline 31 enters the cavity of the storage tank 2 and extends to the bottom of the cavity of the storage tank 2. The other end of the inlet delivery pipeline 31 is connected to the methanol pipeline. The inlet control valve 32 is disposed on the inlet delivery pipeline 31, so that the on / off connection between the inlet delivery pipeline 31 and the methanol pipeline can be controlled by the inlet control valve 32.

[0024] Furthermore, the inlet control valve 32 is located within the cavity of the support frame 1. This arrangement facilitates the operation of the inlet control valve 32, and the support frame 1 protects the inlet control valve 32 from damage.

[0025] In this embodiment, the outlet conveying assembly 4 includes an outlet conveying pipeline 41 and an outlet control valve 42. One end of the outlet conveying pipeline 41 is connected to the top of the storage tank 2, and the other end of the outlet conveying pipeline 41 is connected to the purging system. The outlet control valve 42 is located in the outlet conveying pipeline 41, so that the outlet control valve 42 can control the on / off connection between the outlet conveying pipeline 41 and the purging system.

[0026] In some embodiments, the outlet control valve 42 is located within the cavity of the support frame 1. Similarly, the support frame 1 protects the outlet control valve 42 from damage.

[0027] In this embodiment, the discharge and delivery assembly 5 includes a discharge and delivery pipeline 51 and a discharge control valve 52. One end of the discharge and delivery pipeline 51 is connected to the bottom of the storage tank 2, and the other end of the discharge and delivery pipeline 51 is connected to an external methanol tank. The discharge control valve 52 is disposed on the discharge and delivery pipeline 51, so that the connection between the discharge and delivery pipeline 51 and the external methanol tank can be controlled by the discharge control valve 52.

[0028] Furthermore, the relief control valve 52 is located within the cavity of the support frame 1. Similarly, the support frame 1 protects the relief control valve 52 from damage.

[0029] In this embodiment, the methanol transfer and storage device for the marine low-speed methanol diesel engine also includes a safety valve 6. The safety valve 6 is installed on the top of the storage tank 2. The pressure inside the storage tank 2 can be monitored through the safety valve 6 to ensure the safety of the storage tank 2.

[0030] In some embodiments, the methanol transfer and storage device for marine low-speed methanol diesel engines further includes an observation window 7, which is installed in the storage tank 2, and the methanol level in the storage tank 2 can be observed in real time using the observation window 7.

[0031] Optionally, the methanol transfer and storage device for marine low-speed methanol diesel engines also includes a fixing plate, one end of which is connected to the storage tank 2, and the other end of which is connected to the support frame 1. This improves the stability of the storage tank.

[0032] This embodiment also provides an operation method for a methanol transfer and storage device for a marine low-speed methanol diesel engine, applied to the methanol transfer and storage device for a marine low-speed methanol diesel engine in the above-described scheme. The operation method for the methanol transfer and storage device for a marine low-speed methanol diesel engine includes: When in methanol introduction mode: First, connect the other end of the inlet conveying component 3 to the methanol pipeline, and then connect the other end of the outlet conveying component 4 to the purging system so that methanol gas enters the storage tank 2; then observe the methanol level in the storage tank 2 through the observation window 7 of the methanol transfer and storage device of the marine low-speed methanol diesel engine. If the preset position is reached, disconnect the other end of the inlet conveying component 3 from the methanol pipeline, and then disconnect the other end of the outlet conveying component 4 from the purging system. When in methanol export mode: First, check if the external methanol tank is under normal pressure. If the external methanol tank is under normal pressure, connect the other end of the venting and conveying component 5 to the external methanol tank, and then connect the other end of the outlet conveying component 4 to the purging system so that the methanol in the storage tank 2 can flow out. After the methanol in the storage tank 2 is emptied, disconnect the other end of the venting and conveying component 5 from the external methanol tank, and then disconnect the other end of the outlet conveying component 4 from the purging system.

[0033] Optionally, when the methanol is introduced, safety valve 6 will sound, and the inlet control valve 32 should be closed immediately to check the pressure of storage tank 2; when the methanol is discharged, safety valve 6 will sound, and the discharge control valve 52 should be closed immediately to check the pressure of storage tank 2.

[0034] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A methanol transfer and storage device for a marine low-speed methanol diesel engine, characterized in that, include: The support frame (1) can be installed below the methanol pipeline of the methanol diesel engine; Storage tank (2) is disposed in the cavity of the support frame (1); An inlet conveying assembly (3) is provided, one end of which is connected to the cavity of the storage tank (2), and the other end of which is connected to the methanol pipeline in a way that can be switched on and off. The outlet conveying assembly (4) has one end connected to the top of the storage tank (2) and the other end connected to the purging system of the methanol diesel engine. The venting and conveying assembly (5) has one end connected to the bottom of the storage tank (2) and the other end connected to an external methanol tank.

2. The methanol transfer and storage device for a marine low-speed methanol diesel engine according to claim 1, characterized in that, The inlet delivery assembly (3) includes an inlet delivery pipeline (31) and an inlet control valve (32). One end of the inlet delivery pipeline (31) is inserted into the cavity of the storage tank (2) and extends to the bottom of the cavity of the storage tank (2). The other end of the inlet delivery pipeline (31) is connected to the methanol pipeline. The inlet control valve (32) is located in the inlet delivery pipeline (31) and is used to control the connection and disconnection between the inlet delivery pipeline (31) and the methanol pipeline.

3. The methanol transfer and storage device for a marine low-speed methanol diesel engine according to claim 2, characterized in that, The inlet control valve (32) is located in the cavity of the support frame (1).

4. The methanol transfer and storage device for a marine low-speed methanol diesel engine according to claim 1, characterized in that, The outlet conveying assembly (4) includes an outlet conveying pipeline (41) and an outlet control valve (42). One end of the outlet conveying pipeline (41) is connected to the top of the storage tank (2), and the other end of the outlet conveying pipeline (41) is connected to the purging system. The outlet control valve (42) is located in the outlet conveying pipeline (41) and is used to control the connection and disconnection between the outlet conveying pipeline (41) and the purging system.

5. The methanol transfer and storage device for a marine low-speed methanol diesel engine according to claim 4, characterized in that, The outlet control valve (42) is located in the cavity of the support frame (1).

6. The methanol transfer and storage device for a marine low-speed methanol diesel engine according to claim 1, characterized in that, The venting and conveying assembly (5) includes a venting and conveying pipeline (51) and a venting control valve (52). One end of the venting and conveying pipeline (51) is connected to the bottom of the storage tank (2), and the other end of the venting and conveying pipeline (51) is connected to the external methanol tank. The venting control valve (52) is located in the venting and conveying pipeline (51) and is used to control the connection and disconnection between the venting and conveying pipeline (51) and the external methanol tank.

7. The methanol transfer and storage device for a marine low-speed methanol diesel engine according to claim 6, characterized in that, The vent control valve (52) is located in the cavity of the support frame (1).

8. The methanol transfer and storage device for a marine low-speed methanol diesel engine according to claim 1, characterized in that, The methanol transfer and storage device for the marine low-speed methanol diesel engine also includes a safety valve (6), which is installed on the top of the storage tank (2) and is used to monitor the pressure inside the storage tank (2).

9. The methanol transfer and storage device for a marine low-speed methanol diesel engine according to any one of claims 1-8, characterized in that, The methanol transfer and storage device for the marine low-speed methanol diesel engine also includes an observation window (7), which is installed in the storage tank (2) and is used to observe the methanol level in the storage tank (2).

10. An operating method for a methanol transfer and storage device for a marine low-speed methanol diesel engine, characterized in that, A methanol transfer and storage device applicable to any one of claims 1-9 for a marine low-speed methanol diesel engine, wherein the operation method of the methanol transfer and storage device for the marine low-speed methanol diesel engine includes: When methanol is introduced: First, connect the other end of the inlet conveying component (3) to the methanol pipeline, and then connect the other end of the outlet conveying component (4) to the purging system so that methanol gas enters the storage tank (2). The methanol level in the storage tank (2) is observed through the observation window (7) of the methanol transfer and storage device of the marine low-speed methanol diesel engine. If the preset position is reached, the other end of the inlet conveying component (3) is disconnected from the methanol pipeline, and the other end of the outlet conveying component (4) is disconnected from the purging system. When in methanol export mode: Check if the external methanol tank is under normal pressure; If the external methanol tank is under normal pressure, first connect the other end of the discharge conveying component (5) to the external methanol tank, and then connect the other end of the outlet conveying component (4) to the purging system so that the methanol in the storage tank (2) flows out. After the methanol in the storage tank (2) is emptied, the other end of the discharge conveying assembly (5) is first disconnected from the external methanol tank, and then the other end of the outlet conveying assembly (4) is disconnected from the purging system.

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