Lubricant heating system

Abstract

This invention provides a lubricating oil heating system that maintains the kinematic viscosity of the lubricating oil appropriately and reduces refueling time. [Solution] The lubricating oil heating system 1 comprises a water tank 2 installed on the upper deck K of a bunker ship S1, a heater pipe 4 running along the bottom surface 22a of the water tank 2, a mounting section 3 on which a drum can 13, which is a heat-conducting container containing lubricating oil, is mounted, a support member 5 that supports the mounting section 3 above the heater pipe 4, a circulation pump P1 that circulates fluid F through the heater pipe 4, and a boiler 7, which is a heating means for heating the fluid F. The mounting section 3 has an opening 33 that allows water W in the water tank 2 to pass through.

Description

Technical Field

[0001] The present disclosure relates to a lubricating oil heating system disposed on the upper deck of a bunker ship.

Background Art

[0002] Conventionally, there is known a refueling method in which a bunker ship is moored alongside a ship to be refueled, and the fuel tank of the bunker ship and the fuel tank of the ship to be refueled are connected to perform refueling. For example, Patent Document 1 introduces a refueling method in which a magnetic adsorption device is mounted on a bunker ship, the bunker ship is adsorbed to a ship to be refueled, and the connection work of a refueling hose is made safe and easy.

[0003] By the way, in addition to fuel, a bunker ship may also supply engine oil and other lubricating oils. At this time, a method of transporting the lubricating oil in a drum can and connecting the drum can to the lubricating oil tank of the partner ship and using a fuel supply pump to supply the lubricating oil can be adopted.

[0004] However, especially in winter, there is a problem that the lubricating oil is cooled, the kinematic viscosity becomes high, the fluidity decreases, and the refueling time becomes long. In addition, when supplying lubricating oil with a high kinematic viscosity, there is a risk of imposing a burden on the fuel supply pump and causing a failure or a decrease in durability of the fuel supply pump.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] Therefore, an object of the present disclosure is to provide a lubricating oil heating system that can appropriately maintain the kinematic viscosity of the lubricating oil and suppress the refueling time.

Means for Solving the Problems

[0007] This disclosure is characterized by comprising a water tank installed on the upper deck of a refueling vessel, a heater pipe running along the bottom surface of the water tank, a mounting section for supporting a heat-transferring container containing lubricating oil, a support member supporting the mounting section above the heater pipe, a circulation pump for circulating fluid through the heater pipe, and a heating means for heating the fluid, wherein the mounting section includes an opening for passing water from the water tank. [Effects of the Invention]

[0008] According to the lubricating oil heating system of this disclosure, a water tank is installed on the upper deck of the refueling vessel, heater pipes are laid along the bottom surface of the water tank, and a mounting section is provided above the heater pipes for placing a heat-conducting container containing lubricating oil. As a result, the water heated by the heater pipes keeps the lubricating oil warm, maintaining its kinematic viscosity appropriately and reducing refueling time. [Brief explanation of the drawing]

[0009] [Figure 1] (a) a schematic side view, (b) a schematic top view, and (c) a schematic cross-sectional view along line AA, showing the operating state of the lubricating oil heating system of this disclosure. [Figure 2] This is a system diagram showing the configuration of the lubricating oil heating system. [Figure 3] (a) A schematic plan view showing the arrangement of the heater tube and (b) a plate-shaped member. [Figure 4] (a) A schematic plan view showing the positional relationship between the support member and the heater tube, and (b) the positional relationship between the support member and the plate-shaped member. [Figure 5] (a) Enlarged schematic diagram of the CC line of main part B, (b) Enlarged schematic diagram of the EE line of main part D. [Figure 6] This is an explanatory diagram illustrating a method of supplying lubricating oil using a lubricating oil heating system. [Modes for carrying out the invention]

[0010] Hereinafter, an embodiment of this disclosure implemented in a lubricating oil heating system installed on the upper deck of a bunker vessel will be described with reference to the drawings.

[0011] As shown in Figure 1, the reservoir 2 of the lubricating oil heating system 1 is located on the upper deck K of the bunker ship S, which is a refueling vessel. The upper deck K consists of inclined surfaces that descend from the ship's central axis Ax toward both the port and starboard sides.

[0012] As shown in Figure 2, the lubricating oil heating system 1 comprises a water tank 2, a heater pipe 4 routed along the bottom surface 22a of the water tank 2, a mounting section 3 on which a drum can 13 containing lubricating oil is placed, a support member 5 that supports the mounting section 3 above the heater pipe 4, a circulation pump P1 that circulates fluid F through the heater pipe 4, a boiler 7 as a heating means for heating the fluid F, and a cover 6 that covers the water tank 2. The fluid F can be selected as a liquid such as a flame-retardant oil or water with good thermal conductivity. Preferably, the amount of water W stored in the water tank 2 is such that the entire drum can 13 is submerged by about 10-80%. The water W can be stored from a water tank of a bunker ship S1 or the like using a hose. The material of the cover 6 can be selected as a heat-insulating material, such as a polyvinyl chloride tent fabric like New Pasti (registered trademark) manufactured by Teijin Limited.

[0013] The heater tube 4, mounting section 3, and support member 5 are located inside the water storage tank 2, while the circulation pump P1 and boiler 7 are located outside the water storage tank 2. In addition to the drum can 13, any heat transfer container made of a material capable of transferring heat from hot water to the lubricating oil contained in the drum can 13 can be freely selected.

[0014] The water tank 2 consists of side plates 21 surrounding it on all four sides and a bottom plate 22 installed on the upper deck K. The side plates 21 and the bottom plate 22 are joined by welding. The side plates 21 are provided with scuppers (not shown) for drainage. The bottom plate 22 is formed along the upper deck K. That is, the bottom plate 22 is composed of inclined surfaces that descend from the ship's central axis Ax toward both the port and starboard sides.

[0015] The water storage tank 2 can be formed into a shape that appropriately avoids various devices arranged on the upper deck K, and can be made into various shapes such as a rectangle, a polygon, a circle, etc. Considering the operation such as handling of the drum can 13 on the upper deck K, a rectangle is preferable. The depth of the water storage tank 2 can be about 200 to 300 mm. The material of the water storage tank 2 can be selected, for example, from materials with a high rust prevention effect such as stainless steel.

[0016] As shown in FIG. 3(a), the heater pipe 4 is wound around the bottom surface 22a of the water storage tank 2. The heater pipe 4 is fixed to the floor surface 22a by a U-shaped jig 10. One end of the heater pipe 4 is connected to the other end through the circulation pump P1 and the boiler 7 (see FIG. 2). The material of the heater pipe 4 can be selected, for example, from materials with a high rust prevention effect such as stainless steel. In the example of the present disclosure, two heater pipes 4 are provided, but it is also possible to provide one or three or more heater pipes 4.

[0017] As shown in FIG. 3(b), the placement part 3 has an opening 33 through which the water in the water storage tank 2 passes. By providing the opening 33, the water heated in the water storage tank 2 can be made to flow from the lower layer where the heater pipe 4 is arranged to the upper layer where the drum can 13 is placed, or the water W cooled by the drum can 13 can be made to flow from the upper layer to the lower layer. Therefore, the deviation in the temperature of the water W in the water storage tank 2 can be reduced.

[0018] The placement part 3 has at least a pair of opposing plate-like members 31. The pair of plate-like members 31 have at least one notch 32 at positions facing each other, and the opposing notches 32 constitute one opening 33. By forming the notch 32, when arranging the plate-like member 31, the finger can be inserted into the notch 32, and the work can be advanced while firmly gripping the plate-like member 31.

[0019] The placement part 3 is preferably made of wood. By making the placement part 3 of wood, the wood grain of the plate-shaped member 31 functions as a rough surface, generating an appropriate frictional force between the placement part 3 and the drum can 13, and preventing the lateral sliding of the drum can 13 due to the swaying of the hull during navigation or at anchor. The thickness of the placement part 3 is preferably about 5 cm.

[0020] The empty drum can 13' after refueling can also be placed on the placement part 3. The empty drum cans 13' are bundled and fixed to each other with a string-like member 14 such as a belt to prevent tipping (see Fig. 6). Note that it is not necessary to firmly fix them with the string-like member 14. This is because the bunker ship S sails in calm water areas such as in ports or bays where large swaying does not occur, and because it is necessary to frequently move the drum cans 13' for each operation such as refueling and waste oil recovery.

[0021] As shown in Figs. 4 and 5, the support member 5 is formed in an inverted L-shape and is provided to support the plate-shaped member 31 at the bottom of the L-shape. The support member 5 is arranged parallel to the longitudinal portion of the meandering heater tube 4. The support member 5 is arranged so that the short hand portion of the heater tube 4 can pass through.

[0022] Here, the kinematic viscosity of the lubricating oil will be explained. The kinematic viscosity is the resistance received when a substance is deformed, and is expressed by the formula "kinematic viscosity (cm 2 / s) = viscosity (Pa·s) / density (g / cm 3 )".

[0023] Table 1 shows the viscosity and kinematic viscosity for each temperature of the marine series marine diesel engine oil (lubricating oil) sold by ENEOS Corporation for each model number.

[0024]

Table 1

[0025] Referring to Table 1, it can be seen that the kinematic viscosity of lubricating oil is inversely proportional to its temperature. In other words, by heating the lubricating oil, the kinematic viscosity of the lubricating oil can be suppressed, thereby reducing the load on the lubrication pump P2.

[0026] Generally, the ideal kinematic viscosity of a lubricating oil is 200 mmHg. 2 The kinematic viscosity is less than / s, and in order to achieve this, it is preferable to maintain the temperature of the water W in the reservoir 2 at around 50°C. However, maintaining the temperature of the water W at around 50°C at all times presents a problem in that fuel consumption by the boiler 7 increases, especially in winter. In this regard, according to the present disclosure, since a cover 6 is provided, heat radiation from the water surface is suppressed, and fuel consumption by the boiler 7 can be reduced.

[0027] Next, a method for supplying lubricating oil using the lubricating oil heating system 1 of this disclosure will be described with reference to Figure 6.

[0028] As shown in Figure 6, a drum 13 containing lubricating oil is placed on the mounting section 3, and water W is stored in the water tank 2. Here, since the mounting section 3 is made of wood, the weight of the drum 13 and the rough surface formed by the wood grain create a moderate frictional force, preventing the drum 13 from sliding laterally.

[0029] The boiler 7 heats the fluid F, and the heated fluid F is pumped under pressure by the circulation pump P1, causing it to flow through the heater tube 4. The fluid F flowing through the heater tube 4 heats the water W near the heater tube 4. The heated water W passes through the opening 33 and moves from the lower layer to the upper layer.

[0030] The water W that has moved to the upper layer heats the lubricating oil via the drum 13. The lubricating oil, heated to the appropriate kinematic viscosity, is smoothly drawn up by the refueling pump P2 and supplied to the lubricating oil tank 15 of the receiving vessel S2. At this time, refueling can be performed even more efficiently by simultaneously drawing up lubricating oil from multiple drums 13.

[0031] Accordingly, the lubricating oil heating system 1 of this disclosure allows for the maintenance of an appropriate kinematic viscosity of the lubricating oil during refueling operations by continuously heating the water W heated by the heater tube 4, thereby reducing the refueling time and the load on the refueling pump P2.

[0032] This disclosure is not limited to the embodiments described above, and it is possible to implement the invention by appropriately changing the shape and configuration of each part without departing from the spirit of this disclosure. For example, it is possible to use other heat sources such as electric heaters instead of the oil heater using heater tube 4. [Explanation of Symbols]

[0033] 1. Lubrication oil heating system 2. Water storage tank 3 Mounting section 4 Heater tubes 5. Support Member 6 Covers 7 Boiler 13 drums 14 String-like member 21 Side panel 22 Bottom plate 31 Plate-shaped member 32 Notch 33 Opening S1 Bunker Ship S2 Refueling vessel K Upper deck P1 Circulation pump P2 Fueling pump W water F fluid

Claims

1. The vessel comprises a water tank installed on the upper deck of a refueling ship, a heater pipe running along the bottom surface of the water tank, a mounting section for placing a heat-transferring container containing lubricating oil, a support member supporting the mounting section above the heater pipe, a circulation pump for circulating fluid through the heater pipe, and a heating means for heating the fluid. A lubricating oil heating system in which the mounting portion includes an opening for allowing water in the water storage tank to pass through.

2. The lubricating oil heating system according to claim 1, wherein the mounting portion is made of wood.

3. The lubricating oil heating system according to claim 1, further comprising a cover that covers the water storage tank.

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