Arrangement of methanol bunkering equipment accessories for a methanol dual-fuel VLOC ship

Abstract

The application discloses a kind of methanol dual-fuel VLOC ship methanol cabin equipment accessories arrangement structure, including open deck, isolated empty cabin and methanol cabin, several pipes are arranged in the isolated empty cabin between methanol cabin roof and open deck, the top end of the pipe is communicated with the arrangement of open deck, the bottom end of the pipe is communicated with the arrangement of methanol cabin roof, pipe two ends are respectively sealed with open deck, methanol cabin roof fixed connection, the pipe includes with the deep well delivery pump pipe of equipment accessory adaptation, liquid level sensor pipe and pressure sensor pipe.Use this arrangement structure, the safety of maintenance, maintenance accessory equipment can be significantly improved;Innovative pipe type sealing structure and the extension design of temperature sensor protection pipe make equipment cable completely laid in pipe, protection pipe, without direct penetration methanol isolated empty cabin bulkhead, eliminate the risk of water-tight, airtight failure caused by cable in traditional scheme.

Description

Technical Field

[0001] This invention relates to the field of shipbuilding technology, specifically to an arrangement structure of equipment accessories for the methanol tank of a methanol dual-fuel VLOC ship. Background Technology

[0002] In the design and construction of methanol dual-fuel VLOC vessels, a dedicated methanol isolation compartment is typically designed around the methanol tank to ensure safety. Various critical equipment accessories need to be installed on the top of the methanol tank, such as a methanol deep-well transfer pump, radar level sensor, pressure sensor, and temperature sensor. In existing technology, these devices and accessories are usually installed directly inside the methanol isolation compartment. However, this arrangement has significant drawbacks and problems:

[0003] 1. Difficulty in ensuring watertightness and airtightness: The methanol isolation compartment is designed to be both watertight and airtight. Cables required for equipment accessories must enter and exit the compartment through the bulkhead, significantly increasing the difficulty of maintaining watertightness and airtightness. To meet sealing requirements, special and expensive cable entry devices must be installed, leading to a significant increase in shipbuilding costs.

[0004] 2. Difficult to maintain and poses safety hazards: During daily operation, these equipment accessories require regular maintenance and upkeep. The isolation chamber space is typically very small, with personnel only able to enter and exit through a limited number of doors, making operation extremely inconvenient. More importantly, the air circulation inside the isolation chamber is poor. Methanol, as a volatile fuel, may release trace amounts of vapor from the equipment or interfaces, gradually accumulating within the sealed isolation chamber. This poses significant potential safety risks such as poisoning and explosion to personnel entering the chamber for maintenance operations.

[0005] Therefore, it is necessary to provide an arrangement structure for the methanol tank equipment accessories of a methanol dual-fuel VLOC ship to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies by providing an arrangement structure for methanol tank equipment accessories on methanol dual-fuel VLOC ships, which can effectively solve the problems of high cost, inconvenient maintenance, and safety hazards in existing technologies.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] An arrangement structure for methanol tank equipment accessories of a methanol dual-fuel VLOC ship includes an open deck, an isolation compartment, and a methanol tank. Several conduits are installed in the isolation compartment between the methanol tank top plate and the open deck. The top end of the conduits is connected to the open deck, and the bottom end of the conduits is connected to the methanol tank top plate. Both ends of the conduits are sealed and fixed to the open deck and the methanol tank top plate, respectively. The conduits include a deep well transfer pump conduit, a liquid level sensor conduit, and a pressure sensor conduit adapted to the equipment accessories.

[0009] Preferably, a methanol deep well transfer pump is installed inside the deep well transfer pump conduit. The methanol deep well transfer pump includes a pump body and a pump pipe. The pump body is located at the top of the deep well transfer pump conduit and extends to the top of the open deck. The pump body is equipped with components for regular maintenance. A pump pipe is located below the pump body. The pump pipe is arranged along the deep well transfer pump conduit and extends from the bottom of the deep well transfer pump conduit into the methanol tank. The suction end of the methanol deep well transfer pump extends to the bottom of the methanol tank. A first protective cover is provided above the pump body.

[0010] Preferably, a radar level sensor is installed above the liquid level sensor conduit, the radar level sensor transmitter is installed on the open deck, the diameter of the liquid level sensor conduit is adapted to the radar wave transmission trajectory, and a second protective cover is provided above the radar level sensor.

[0011] Preferably, the pressure sensor conduit includes a flange end at the top, which extends above the open deck. The pressure sensor is installed in conjunction with the flange end, and a third protective cover is provided above the pressure sensor.

[0012] Preferably, the equipment accessory includes a temperature sensor, the body of which is fixedly connected to the open deck, a protective tube is provided below the body, the protective tube passes through the isolated empty compartment and extends into the methanol tank, the protective tube is sealed and fixedly connected to the top plate of the methanol tank, and a fourth protective cover is provided above the body.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] 1. Significantly Improved Operational Safety: By extending the operating terminals of components requiring regular maintenance, such as those in the methanol deep well transfer pump, as well as radar level sensors, pressure sensors, and temperature sensors, to the open deck area, operators can perform routine maintenance without entering the enclosed methanol isolation chamber. This fundamentally eliminates the risk of personnel being exposed to accumulated methanol vapor in a confined space, effectively avoiding major safety hazards such as poisoning and explosions.

[0015] 2. Completely solves the problem of compartment sealing: The unique conduit-type sealing structure and the extended design of the temperature sensor protection tube allow the equipment cables to be laid entirely inside the conduit and protection tube, without having to directly penetrate the methanol isolation chamber wall, thus eliminating the risk of watertight and airtight failures caused by cables passing through the chamber in traditional solutions.

[0016] 3. Optimize maintenance efficiency and operability: Provide the operating end of the auxiliary equipment on the open deck with a spacious operating space and good ventilation environment, so that maintenance personnel can carry out maintenance quickly and conveniently without having to enter and exit the isolation compartment through narrow passages. Attached Figure Description

[0017] Figure 1 This is a structural diagram showing the arrangement of accessories for the methanol tank equipment of the present invention;

[0018] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0019] Among them, 1-open deck, 2-isolated empty compartment, 3-methanol tank, 4-deep well transfer pump conduit, 5-liquid level sensor conduit, 6-pressure sensor conduit, 7-methanol deep well transfer pump, 701-pump body, 702-pump pipe, 8-first protective cover, 9-radar liquid level sensor, 10-second protective cover, 11-pressure sensor, 12-third protective cover, 13-temperature sensor, 1301-body, 1302-protective pipe, 14-fourth protective cover Detailed Implementation

[0020] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and not for limiting the scope of the invention. After reading this invention, any modifications of the invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0021] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixed connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0022] In this invention, terms such as "upper," "lower," "bottom," and "top" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely relational terms determined for the convenience of describing the structural relationship of the various components or elements of this invention, and do not specifically refer to any component or element in this invention, and should not be construed as limiting this invention.

[0023] like Figures 1 to 2As shown, the arrangement structure of equipment accessories for a methanol tank on a methanol dual-fuel VLOC ship includes an open deck 1, an isolation compartment 2, and a methanol tank 3. The isolation compartment is located between the top plate of the methanol tank and the open deck. Several conduits are installed in the isolation compartment. The top ends of the conduits are connected to and sealed to the open deck, and the bottom ends of the conduits are connected to and sealed to the top plate of the methanol tank. The conduits include a deep well transfer pump conduit 4, a liquid level sensor conduit 5, and a pressure sensor conduit 6 adapted to the equipment accessories. A methanol deep well transfer pump 7 is installed in the deep well transfer pump conduit. The methanol deep well transfer pump includes a pump body 701 and a pump pipe 702. The pump body is installed at the top of the deep well transfer pump conduit and extends to the top of the open deck. The pump body is equipped with components for regular maintenance. A pump pipe is located below the pump body. The pump pipe is arranged along the deep well transfer pump conduit and extends from the bottom end of the deep well transfer pump conduit into the methanol tank. The suction end of the methanol deep well transfer pump extends to the bottom of the methanol tank through the pump pipe. A first protective cover 8 is installed above the pump body. The transmitting device of the radar liquid level sensor 9 is installed in the open deck. On the deck, the radar transmitter of the radar level sensor is located directly above the level sensor conduit. The diameter of the level sensor conduit is adapted to the radar wave transmission trajectory. A second protective cover 10 is installed above the radar level sensor. The pressure sensor conduit includes a flange end at the top, which extends to the open deck. The pressure sensor 11 is installed and connected to the flange end. A third protective cover 12 is installed above the pressure sensor. The equipment accessories also include a temperature sensor 13. The body 1301 of the temperature sensor is connected and fixed to the open deck. A protective pipe 1302 is provided below the body. The protective pipe passes through the isolation compartment and extends into the methanol tank. The protective pipe is sealed and fixed to the top plate of the methanol tank. A fourth protective cover 14 is installed above the body. When the pump body of the methanol deep well transfer pump, the radar level sensor, the pressure sensor, and the temperature sensor are all installed on the open deck, due to long-term exposure to the open environment, in order to avoid damage to the equipment accessories caused by rainwater and seawater, it is necessary to install corresponding first, second, third, and fourth protective covers to protect the equipment accessories.

[0024] The principle of the methanol tank equipment accessory arrangement structure of a methanol dual-fuel VLOC ship: The present invention moves the operating end of the accessory equipment, which originally needed to be placed in the isolated compartment, to the open deck through a conduit structure. Combined with sealing welding technology and protective devices, the maintenance and upkeep of the accessory equipment can be arranged on the open deck, avoiding the safety hazards caused by personnel entering the relatively closed isolated compartment and coming into contact with methanol vapor. The two ends of the conduit are respectively sealed and welded to the open deck and the top plate of the methanol tank to form an independent airtight channel, preventing methanol from leaking into the isolated compartment. The accessory equipment installed on the open deck is equipped with a customized protective cover to resist rain and seawater impact.

[0025] An installation method for the equipment and accessory arrangement structure of a methanol tank on a methanol dual-fuel VLOC ship:

[0026] 1. Installation of the methanol deep well transfer pump: Drill a hole at the selected location on the top plate of the methanol tank, seal and weld the bottom end of the large-diameter deep well transfer pump pipe to the top plate of the methanol tank, and seal and weld the top end of the pipe through the isolation compartment to the opening on the open deck to ensure that the pipe is airtight. Insert the pump pipe of the methanol deep well transfer pump from the top end of the pipe and extend it to the bottom of the methanol tank so that the suction end of the methanol deep well transfer pump is close to the bottom of the tank. Install the pump body on the top end of the pipe and extend it above the open deck. Install a first protective cover on the pump body, and seal and fix the edge of the cover to the open deck to prevent rainwater and seawater from corroding the pump body.

[0027] 2. Installation of radar level sensor: Calculate the required diameter of the conduit based on the radar wave transmission trajectory to ensure that the beam does not penetrate without interference. Seal and weld the bottom end of the level sensor conduit to the top plate of the methanol tank and the top end to the open deck. Install the radar transmitter directly above the conduit on the open deck, with the transmitting end aligned with the central axis of the conduit. Install a second protective cover above the radar level sensor, with the edge of the cover sealed and fixed to the open deck to prevent rainwater and seawater from corroding the pump body.

[0028] 3. Pressure sensor installation: A flange is pre-welded to the top of the pressure sensor conduit to form a flange end. After the entire conduit passes through the isolation chamber, the bottom end of the pressure sensor conduit is sealed and welded to the top plate of the methanol tank. The flange end protrudes from the open deck. The pressure sensor is directly connected to the flange end of the pressure sensor conduit by bolts. A third protective cover is installed above the pressure sensor. The edge of the cover is sealed and fixed to the open deck to prevent rainwater and seawater from corroding the pump body.

[0029] 4. Temperature sensor installation: The bottom end of the protective tube of the temperature sensor penetrates through the top plate of the methanol tank and is sealed and welded to the top plate of the methanol tank. The temperature sensor body extends to the top of the open deck and is fixedly installed on the open deck. A fourth protective cover is installed above the temperature sensor. The edge of the cover is sealed and fixed to the open deck to prevent rainwater and seawater from corroding the pump body.

[0030] The foregoing description illustrates and describes preferred embodiments of the present invention. As previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. An arrangement structure for methanol tank equipment accessories on a methanol dual-fuel VLOC vessel, comprising an open deck, an isolated empty compartment, and a methanol tank, characterized in that: Several conduits are installed in the isolation compartment between the methanol tank top plate and the open deck. The top end of the conduit is connected to the open deck, the bottom end of the conduit is connected to the methanol tank top plate, and both ends of the conduit are sealed and fixed to the open deck and the methanol tank top plate, respectively. The conduit includes a deep well delivery pump conduit, a liquid level sensor conduit, and a pressure sensor conduit adapted to the equipment accessories. A methanol deep well transfer pump is installed inside the deep well transfer pump conduit. The methanol deep well transfer pump includes a pump body and a pump pipe. The pump body is located at the top of the deep well transfer pump conduit and extends to the top of the open deck. The pump body is equipped with components for regular maintenance. A pump pipe is located below the pump body. The pump pipe is arranged along the deep well transfer pump conduit and extends from the bottom of the deep well transfer pump conduit into the methanol tank. The suction end of the methanol deep well transfer pump extends to the bottom of the methanol tank. A first protective cover is provided above the pump body. A radar level sensor is installed above the liquid level sensor conduit. The transmitting device of the radar level sensor is installed on the open deck. The diameter of the liquid level sensor conduit is adapted to the transmission trajectory of the radar wave. A second protective cover is provided above the radar level sensor. The pressure sensor conduit includes a flange end at the top, which extends above the open deck. The pressure sensor is installed in conjunction with the flange end, and a third protective cover is provided above the pressure sensor.

2. The arrangement structure of the methanol tank equipment accessories for a methanol dual-fuel VLOC ship according to claim 1, characterized in that: The equipment accessories also include a temperature sensor. The body of the temperature sensor is fixedly connected to the open deck. A protective tube is provided below the body. The protective tube passes through the isolated empty compartment and extends into the methanol tank. The protective tube is sealed and fixed to the top plate of the methanol tank. A fourth protective cover is provided above the body.

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