Fan control system for cargo oil pump chamber of liquefied natural gas carrier

Abstract

The utility model discloses a liquefied natural gas carrier cargo oil pump chamber draught fan control system which comprises a cabin draught fan control panel box body, and a first cargo oil pump cabin draught fan control unit, a second cargo oil pump cabin draught fan control unit and an I / O signal unit are arranged in the cabin draught fan control panel box body. The first cargo oil pump cabin fan control unit and the second cargo oil pump cabin fan control unit are respectively connected with the I / O signal unit through signal lines, and the output end of the I / O signal unit is electrically connected with the carbon dioxide release alarm box and the evaporation steam compressor starting box through signal lines. Two ship body power supplies are adopted for supplying power respectively, when one power supply breaks down, it is ensured that a ship cabin ventilation system cannot be completely invalid and a ventilation system of an important cabin system cannot be interrupted, meanwhile, all the modules are connected through the I / O signal unit, automatic control between the systems is achieved, cost is saved, and working efficiency is improved. The control level of the cargo oil pump cabin fan is improved, and the operation safety of the liquefied natural gas ship is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of ship equipment, in particular to a fan control system for a cargo oil pump room of a liquefied natural gas ship. Background Art

[0002] At present, the regulations of various classification societies and the International Maritime Organization have clear requirements for the ventilation system of cargo oil pump cabins of liquefied gas carriers to ensure the safety of the ship during the entire navigation and fuel gas bunkering operation mode. For the fans of important cargo oil pump cabins, the cabin ventilation system will not fail due to a bus power failure or a fan control unit system failure, ensuring the continuity of cabin ventilation. Therefore, the design of the fan control system for this cabin of the ship plays a very critical role in the safety of the ship and the normal operation of the operation. Utility Model Content

[0003] The utility model aims at one or more of the above existing problems and provides a fan control system for a cargo oil pump room of a liquefied natural gas ship.

[0004] According to one aspect of the utility model, a liquefied natural gas ship cargo oil pump room fan control system includes a cabin fan control panel box, in which a first cargo oil pump cabin fan control unit, a second cargo oil pump cabin fan control unit and an I / O signal unit are arranged, the first cargo oil pump cabin fan control unit and the second cargo oil pump cabin fan control unit are respectively connected to the I / O signal unit through signal lines, and the output end of the I / O signal unit is electrically connected to a carbon dioxide release alarm box and a fuel pump & evaporative steam compressor start box through a signal line.

[0005] As a feasible preferred method, it also includes two hull power supplies, one hull power supply is electrically connected to the first cargo oil pump compartment fan control unit through a power line, and the other hull power supply is electrically connected to the second cargo oil pump compartment fan control unit through a power line.

[0006] As a feasible preferred manner, the first cargo oil pump compartment fan control unit is connected to the first fan via a power line, and the second cargo oil pump compartment fan control unit is connected to the second fan via a power line.

[0007] As a feasible preferred method, the output end of the I / O signal unit is also connected to the cabin lighting distribution box through a signal line.

[0008] As a feasible preferred mode, the output end of the I / O signal unit is also connected to the marine automation and alarm safety system through a signal line.

[0009] The beneficial effects of the utility model are:

[0010] 1) Two hull power supplies are used to supply power separately. When one power supply fails, it ensures that the ship's cabin ventilation system will not fail completely and the ventilation system of important cabin systems will not be interrupted.

[0011] 2) By connecting the I / O signal unit with the automated integrated alarm safety system, an unmanned cabin can be realized. The operating status of the cargo oil pump cabin fan can be monitored in real time at the ship's centralized control station, the fan can be remotely operated, and corresponding safety protection measures can be taken in time for fan failures.

[0012] 3) By using the I / O signal unit to connect the cabin lighting wind power box, the carbon dioxide release alarm box and the evaporative steam compressor start box with signal lines, automatic control between systems is achieved. Therefore, the design of multiple module linkage control saves costs, improves the control level of the cargo oil pump cabin fan, and ensures the operational safety of liquefied natural gas ships and the safety of crew members. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a practical liquefied natural gas ship cargo oil pump room fan control system. DETAILED DESCRIPTION

[0014] The technical solution of the application is further described in detail below with reference to the accompanying drawings.

[0015] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of 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.

[0016] It should be noted that all expressions using "first", "second", "third" and "fourth" in the embodiments of the present invention are intended to distinguish two non-identical entities with the same name or non-identical parameters. It can be seen that "first", "second", "third" and "fourth" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0017] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0018] like Figure 1 As shown, a liquefied natural gas ship cargo oil pump room fan control system includes a cabin fan control panel box 1, a fan control unit and an I / O signal unit 4 are arranged in the cabin fan control panel box 1, and the fan control unit includes a first cargo oil pump cabin fan control unit 2 and a second cargo oil pump cabin fan control unit 3. The first cargo oil pump cabin fan control unit 2 and the second cargo oil pump cabin fan control unit 3 are respectively connected to the I / O signal unit 4 through signal lines, and the output end of the I / O signal unit is electrically connected to the carbon dioxide release alarm box and the evaporative steam compressor starting box through the signal line. Therefore, the fan control unit is connected to the carbon dioxide release alarm box through the I / O signal unit. When a fire occurs on the ship and the released carbon dioxide is detected, the fan can be automatically shut down through the fan control unit, thereby ensuring the safety of the ship. By using the evaporative steam compressor starting box, the fan can be automatically started when the evaporative steam compressor is running, ensuring the safety of the entire fuel gas supply system.

[0019] In the application, two hull power supplies from the hull are used to power the fan control unit respectively, specifically: two hull power supplies are used, one hull power supply is electrically connected to the first cargo oil pump cabin fan control unit 2 through a power line, and the other hull power supply is electrically connected to the second cargo oil pump cabin fan control unit 3 through a power line, the first cargo oil pump cabin fan control unit 2 is connected to the first fan 5 through a power line, and the second cargo oil pump cabin fan control unit 3 is connected to the second fan 6 through a power line. Therefore, both the first fan and the second fan are connected to the I / O signal unit 4. Therefore, because the power comes from two power supplies on the ship, when one of the power supplies fails, it is ensured that the cabin fans will not fail at the same time, thereby ensuring the safety of the ship.

[0020] At the same time, when any fan fails, another fan can be started automatically, ensuring that the ventilation of important compartments will not fail due to power failure or control circuit failure of one fan.

[0021] As shown in the figure, further, the output end of the I / O signal unit is also connected to the cabin lighting distribution box 7 through a signal line. In the present application, the first cargo oil pump cabin fan control unit 2 and the second cargo oil pump cabin fan control unit 3 are connected to the cabin lighting distribution box 7 through the I / O signal unit 4, so that when the cabin lighting lamps are lit, the cargo oil pump cabin fan can be automatically started to realize the protection function for the personnel entering the operation.

[0022] It should be noted that the output end of the I / O signal unit is also connected to the ship automation and alarm safety system 10 via a signal line.

[0023] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, and these all belong to the protection scope of the present invention.

Claims

1. A liquefied natural gas cargo oil pump room fan control system, characterized in that: The invention comprises a cabin fan control panel box (1), wherein a first cargo oil pump cabin fan control unit (2), a second cargo oil pump cabin fan control unit (3) and an I / O signal unit (4) are arranged in the cabin fan control panel box (1), the first cargo oil pump cabin fan control unit (2) and the second cargo oil pump cabin fan control unit (3) are respectively connected to the I / O signal unit (4) via signal lines, and the output end of the I / O signal unit is electrically connected to a carbon dioxide release alarm box and an evaporative steam compressor start box via the signal line.

2. A liquefied natural gas cargo oil pump room fan control system according to claim 1, characterized in that: It also includes two hull power supplies, one hull power supply is electrically connected to the first cargo oil pump compartment fan control unit (2) through a power line, and the other hull power supply is electrically connected to the second cargo oil pump compartment fan control unit (3) through a power line.

3. A liquefied natural gas cargo oil pump room fan control system according to claim 2, characterized in that: The first cargo oil pump compartment fan control unit (2) is connected to the first fan (5) via a power line, and the second cargo oil pump compartment fan control unit (3) is connected to the second fan (6) via a power line.

4. A liquefied natural gas cargo oil pump room fan control system according to claim 1, characterized in that: The output end of the I / O signal unit is also connected to the cabin lighting distribution box (7) via a signal line.

5. A liquefied natural gas cargo oil pump room fan control system according to claim 1, characterized in that: The output end of the I / O signal unit is also connected to a marine automation and alarm safety system (10) via a signal line.

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