Methanol storage cabin with isolation void cabin

Abstract

The utility model discloses a methanol storage cabin with isolated void cabins, which comprises a methanol fuel ship main body, a methanol storage cabin and a methanol daily cabin are arranged in the methanol fuel ship main body, the isolated void cabins are arranged around the methanol daily cabin, an inert gas generator is further arranged in the methanol fuel ship main body, and the inert gas generator is connected with the isolated void cabins. The methanol storage cabin is arranged in the methanol fuel ship main body, a hydraulic deep-well pump is arranged in the methanol storage cabin, pressure sensors are arranged in the methanol storage cabin and the methanol daily cabin, the methanol storage cabin is arranged in the methanol fuel ship main body, and an isolation void cabin is arranged around the methanol storage cabin. An inert gas generator and an inert gas storage box are arranged in the methanol fuel ship main body, the inert gas storage box is communicated with the isolation void through a third gas conveying pipe, and inert gas is filled into the isolation void through the inert gas storage box, so that the concentration of combustible gas in the isolation void is lower than the lower limit explosion concentration of methanol.

Description

Technical Field

[0001] The utility model relates to the technical field of ship power, in particular to a methanol storage tank with an isolated empty tank. Background Art

[0002] In response to the initial strategy for reducing greenhouse gas emissions from ships, the main engines of large ships have begun to be converted from traditional diesel and heavy oil to various clean and low-carbon energy sources as fuel. The main energy sources currently in use and development are LNG and LPG, but they are still fossil energy and can only be used as intermediate transition carbon reduction solutions. At this time, methanol stands out and becomes a more ideal fuel that further meets zero emissions. From the perspective of the entire life cycle, if it is green methanol made from biomass / direct air carbon capture, it can be considered as 100% carbon reduction. Methanol can be stored and transported in liquid form at room temperature and pressure, and the pressure entering the main engine is low. It is a feasible alternative fuel solution. Therefore, how to ensure the safe storage and transportation of methanol in ships has become an urgent problem that needs to be solved. Utility Model Content

[0003] 1. Technical problems solved

[0004] In view of the deficiencies in the prior art, the utility model provides a methanol storage tank with an isolated air compartment, wherein the methanol storage tank is arranged in the main body of a methanol fuel ship, and an isolated air compartment is arranged around the methanol storage tank. An inert gas generator and an inert gas storage box are arranged in the main body of the methanol fuel ship, and the inert gas storage box and the isolated air compartment are three-way connected through a gas pipeline. The inert gas storage box fills the isolated air compartment with inert gas, so that the concentration of combustible gas in the isolated air compartment is lower than the lower explosion concentration of methanol, thereby solving the problems raised by the background technology.

[0005] 2. Technical solution

[0006] A methanol storage tank with an isolated empty tank comprises a methanol fuel ship body, wherein a methanol storage tank and a methanol daily tank are arranged in the methanol fuel ship body, the methanol storage tank and the methanol daily tank are located below the deck of the methanol fuel ship body, an isolated empty tank is arranged around the methanol daily tank, an inert gas generator is also arranged in the methanol fuel ship body, a hydraulic deep well pump is arranged in the methanol storage tank, and pressure sensors are arranged in both the methanol storage tank and the methanol daily tank.

[0007] Preferably, an inert gas storage tank is also provided in the main body of the methanol fuel ship, the inert gas generator is connected to the inert gas storage tank via a connecting gas pipe, the inert gas storage tank is connected to the methanol daily tank via a second gas pipe, the methanol storage tank is connected to the inert gas storage tank via a first gas pipe, and one-way valves are installed on the first gas pipe and the second gas pipe.

[0008] Preferably, the outlet end of the hydraulic deep well pump is connected to one end of the methanol delivery pipe, the other end of the methanol delivery pipe passes through the bottom end of the methanol daily tank and is connected to the methanol daily tank, and a control valve is installed on the methanol delivery pipe.

[0009] Preferably, the methanol storage tank is connected to the ventilation pipe, the methanol daily tank is connected to the ventilation pipe 2, and the ventilation pipe and the ventilation pipe 2 are equipped with one-way valves.

[0010] Preferably, the inert gas storage box and the isolation cabin are connected via gas pipe 3, the isolation cabin is connected with ventilation pipe 3, a hydraulic fan is arranged in the isolation cabin, and both gas pipe 3 and ventilation pipe 3 are installed with one-way valves.

[0011] Preferably, the isolation compartment is connected to a fire water pipe, and the fire water pipe is connected to a fire water main.

[0012] 3. Beneficial effects

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The methanol storage tank is arranged in the main body of the methanol fuel ship, and an isolation air compartment is arranged around the methanol storage tank. An inert gas generator and an inert gas storage box are arranged in the main body of the methanol fuel ship. The inert gas storage box and the isolation air compartment are three-way connected through a gas pipeline. The inert gas storage box fills the inert gas into the isolation air compartment to make the combustible gas concentration in the isolation air compartment lower than the lower explosion concentration of methanol. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a partial structural sectional view of the utility model.

[0017] In the figure: 1. Main body of methanol fuel ship; 101. Methanol storage tank; 102. Methanol daily tank; 103. Inert gas generator; 104. Inert gas storage tank; 105. Hydraulic deep well pump; 106. Methanol delivery pipe; 107. Gas pipe one; 108. Gas pipe two; 109. Ventilation pipe; 110. Ventilation pipe two; 111. Isolation empty compartment; 112. Connecting gas pipe; 113. Gas pipe three; 114. Hydraulic fan; 115. Fire water main; 116. Fire water pipe; 117. One-way valve; 118. Control valve; 119. Ventilation pipe three. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Example

[0020] Reference Figure 1-2 As shown,

[0021] A methanol storage tank with an isolated empty tank comprises a methanol fuel ship body, wherein a methanol storage tank and a methanol daily tank are arranged in the methanol fuel ship body, the methanol storage tank and the methanol daily tank are located below the deck of the methanol fuel ship body, an isolated empty tank is arranged around the methanol daily tank, an inert gas generator is also arranged in the methanol fuel ship body, a hydraulic deep well pump is arranged in the methanol storage tank, and pressure sensors are arranged in both the methanol storage tank and the methanol daily tank;

[0022] The methanol storage tank is arranged in the main body of the methanol fuel ship. The methanol storage tank is used to store methanol fuel. The methanol storage tank transports the methanol fuel to the methanol daily tank for use. An isolation cabin is arranged around the methanol storage tank. An inert gas generator is arranged in the main body of the methanol fuel ship. The inert gas generator generates inert gas and fills it into the isolation cabin, forcing the air in the isolation cabin out of the isolation cabin so that the combustible gas concentration in the isolation cabin is lower than the lower explosion concentration of methanol. To ensure safety, the combustible gas concentration in the isolation cabin is lower than the lower explosion concentration of methanol by %.

[0023] An inert gas storage tank is also provided in the main body of the methanol fuel ship. The inert gas generator is connected to the inert gas storage tank through a connecting gas pipe. The inert gas storage tank is connected to the methanol daily tank through a second gas supply pipe. The methanol storage tank is connected to the inert gas storage tank through a first gas supply pipe. One-way valves are installed on the first and second gas supply pipes. The methanol storage tank is connected to a ventilation pipe. The methanol daily tank is connected to a second ventilation pipe. One-way valves are installed on the ventilation pipe and the second ventilation pipe.

[0024] The inert gas generated by the inert gas generator is stored in an inert gas storage box. The inert gas enters the methanol storage tank through gas pipe one, and enters the methanol daily tank through gas pipe two. During the loading, unloading, transportation and storage of methanol, the methanol storage tank and the methanol daily tank are replaced and pressurized by the inert gas. The methanol storage tank and the methanol daily tank are both provided with pressure sensors for real-time monitoring of the pressure in the methanol storage tank and the methanol daily tank, controlling the one-way valve switches of gas pipe one, gas pipe two, vent pipe one and vent pipe two, and maintaining the pressure in the methanol storage tank and the methanol daily tank stable.

[0025] The outlet end of the hydraulic deep well pump is connected to one end of the methanol delivery pipe, the other end of the methanol delivery pipe passes through the bottom end of the methanol daily tank and is connected to the methanol daily tank, and a control valve is installed on the methanol delivery pipe;

[0026] The filling and discharge of the methanol daily tank both use a methanol delivery pipe, which avoids opening additional holes in the methanol storage tank and eliminates the need for separate discharge pipelines, thus solving the problem of insufficient space for pipeline layout on the main deck of the container ship.

[0027] The inert gas storage box and the isolation cabin are connected through a gas pipe 3, the isolation cabin is connected with a ventilation pipe 3, a hydraulic fan is arranged in the isolation cabin, and a one-way valve is installed on both the gas pipe 3 and the ventilation pipe 3;

[0028] A combustible gas detection device is provided in the ventilation pipe three, which is used to monitor the concentration of combustible gas in the gas when the air in the isolation cabin is discharged through the ventilation pipe three. When the combustible gas in the isolation cabin is discharged, the one-way valve of the gas supply pipe three and the ventilation pipe three are opened to allow the inert gas to force the air in the isolation cabin out of the isolation cabin. After the combustible gas detection device monitors that the concentration of combustible gas in the gas passing through the ventilation pipe three is lower than the lower explosion limit concentration of methanol by %, the one-way valve of the gas supply pipe three and the ventilation pipe three are closed. When it is necessary to discharge the inert gas in the isolation cabin, the hydraulic fan and the one-way valve of the ventilation pipe three are opened to force the inert gas in the isolation cabin out of the isolation cabin.

[0029] The isolation cabin is connected to a fire water pipe, and the fire water pipe is connected to a fire water main;

[0030] If methanol leaks into the isolated empty compartment when being added to the methanol storage tank, the one-way valve of the vent pipe 3 is opened, and water is passed through the fire water main pipe. Water enters the isolated empty compartment through the fire water main pipe and the fire water pipe to dilute and absorb the leaked methanol.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A methanol storage tank with an isolated empty tank, comprising a methanol fuel ship body (1), characterized in that: The methanol fuel ship body (1) is provided with a methanol storage tank (101) and a methanol daily tank (102). The methanol storage tank (101) and the methanol daily tank (102) are located below the deck of the methanol fuel ship body (1). An isolation empty tank (111) is provided around the methanol daily tank (102). The methanol fuel ship body (1) is also provided with an inert gas generator (103). The methanol storage tank (101) is provided with a hydraulic deep well pump (105). The methanol storage tank (101) and the methanol daily tank (102) are both provided with pressure sensors.

2. A methanol storage tank with an isolated empty tank according to claim 1, characterized in that: The methanol fuel ship body (1) is also provided with an inert gas storage box (104); the inert gas generator (103) is connected to the inert gas storage box (104) via a connecting gas pipe (112); the inert gas storage box (104) is connected to the methanol daily cabin (102) via a second gas pipe (108); the methanol storage cabin (101) is connected to the inert gas storage box (104) via a first gas pipe (107); and one-way valves (117) are installed on the first gas pipe (107) and the second gas pipe (108).

3. The methanol storage tank with an isolated empty tank according to claim 1, characterized in that: The outlet end of the hydraulic deep well pump (105) is connected to one end of a methanol delivery pipe (106), and the other end of the methanol delivery pipe (106) passes through the bottom end of the methanol daily tank (102) and is connected to the methanol daily tank (102). A control valve (118) is installed on the methanol delivery pipe (106).

4. The methanol storage tank with an isolated empty tank according to claim 1, characterized in that: The methanol storage tank (101) is in communication with the ventilation pipe (109), and the methanol daily use tank (102) is in communication with the second ventilation pipe (110). Check valves (117) are installed on the ventilation pipe (109) and the second ventilation pipe (110).

5. The methanol storage tank with an isolated empty tank according to claim 2, characterized in that: The inert gas storage box (104) and the isolation cabin (111) are connected via a gas pipe three (113), the isolation cabin (111) is connected to a ventilation pipe three (119), a hydraulic fan (114) is arranged in the isolation cabin (111), and both the gas pipe three (113) and the ventilation pipe three (119) are equipped with a one-way valve (117).

6. The methanol storage tank with an isolated empty tank according to claim 1, characterized in that: The isolation chamber (111) is in communication with a fire-fighting water pipe (116), and the fire-fighting water pipe (116) is in communication with a fire-fighting water main (115).

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