CN215726167U - Ship oil consumption metering system with oil return cooling function - Google Patents

Abstract

The utility model discloses a ship oil consumption metering system with an oil return cooling function, which belongs to the technical field of ship fuel oil systems and comprises an oil tank, an oil consumption mechanism and an oil pipeline arranged between the oil tank and the oil consumption mechanism; the oil delivery pipeline is provided with a first metering device for metering the fuel flow of the oil tank flowing into the oil consumption mechanism; an oil return pipeline is further arranged at the oil return port corresponding to the oil consumption mechanism, and a cold oil mechanism is further arranged on the oil return pipeline and used for cooling return oil. The utility model provides a ship oil consumption metering system with an oil return cooling function, which can realize accurate metering of fuel oil quantity change in a ship oil tank without being influenced by external factors such as the structure of the oil tank, the motion state of a ship and the like, correspondingly, the oil return provides a high-efficiency cooling function, so that the oil return does not influence the oil quantity metering and the normal operation of an oil consumption mechanism due to the temperature, and the fuel oil is effectively guaranteed in the aspect of normal and stable operation of the ship.

Description

Ship oil consumption metering system with oil return cooling function

Technical Field

The utility model belongs to the technical field of ship fuel oil systems, and particularly relates to a ship fuel consumption metering system with an oil return cooling function.

Background

With the rapid development of the world economy, the importance of the transportation industry as the major artery of the economic development is increasing day by day, and the ship transportation is widely applied due to the characteristics of large carrying capacity, low transportation cost and the like. As the ship travels longer and longer, the fuel consumption of the ship during operation is usually large, and the statistical measurement of the fuel often influences the normal navigation of the ship.

The oil consumption management in the prior art mainly adopts a working mode of manually recording the oil consumption values of the ships for refueling, oil transportation, oil refuting and each voyage to carry out simple statistical analysis. Not only human resources are wasted, but also the recorded data volume is relatively small, and the defects of data distortion and the like caused by manual excessive intervention cannot be avoided, so that scientific statistical analysis cannot be carried out.

Particularly for the measurement of the fuel consumption of the ship, the measurement of the fuel consumption of the ship in the prior art usually adopts a tank capacity method, wherein a fuel liquid level sensor is arranged in a ship oil tank for measuring the height of the oil level of the oil tank, and the height of the oil level is converted into volume and weight according to a tank capacity curve of the oil tank. However, for various reasons, the oil tank capacity curve provided by a ship design unit often has a large deviation from the actual capacity curve of a ship, so that the metering error of the fuel consumption of the ship is large. On the other hand, because the ship is not static in river water, particularly in the process of ship driving, the ship vibrates greatly, the oil tank fuel level is always in large fluctuation, the liquid level sensor cannot reflect the real oil level easily, and the large error is brought to the measurement of fuel consumption.

In addition, the fuel temperature directly influences the density, kinematic viscosity, flow coefficient and throttling effect of the fuel, so that the metering adjustment of the fuel injected into the combustion chamber, the air-fuel ratio of the mixed gas, the performance of a fuel consumption mechanism and the reliable lubrication of a fuel system by the fuel injection pump are influenced. The increase in fuel temperature reduces the amount of fuel supplied, thereby affecting the performance of the fuel consumption mechanism. In the prior art, the return oil of the oil consumption mechanism is usually cooled by directly returning an oil tank to perform large circulation, the return oil can be effectively cooled by utilizing the large volume and large capacity of the oil tank, and the cooling effect is gradually reduced along with the gradual reduction of the oil level of the oil tank.

SUMMERY OF THE UTILITY MODEL

Aiming at one or more of the defects or the improvement requirements in the prior art, the utility model provides the ship oil consumption metering system with the return oil cooling function, which can not be influenced by external factors such as the structure of an oil tank, the motion state of a ship and the like, and realizes the accurate metering of the change of the fuel oil quantity in the ship oil tank; correspondingly, the oil return provides efficient cooling effect, so that the oil return can not influence the oil quantity metering and the normal operation of an oil consumption mechanism due to the temperature, and the fuel oil can be effectively guaranteed in the normal and stable operation of the ship.

In order to achieve the purpose, the utility model provides a ship oil consumption metering system with an oil return cooling function, which comprises an oil tank and at least one oil consumption mechanism, wherein the oil tank is communicated with the oil consumption mechanism through an oil pipeline;

the oil pipeline is provided with a metering device for metering the fuel flow of the oil tank flowing into the oil consumption mechanism;

and an oil return pipeline is also arranged corresponding to the oil return port of the oil consumption mechanism, and a cold oil mechanism is also arranged on the oil return pipeline and used for cooling return oil.

As a further preferred of the present invention, the cold oil mechanism comprises an oil side pipe and a heat exchange member;

two ends of the oil side pipeline are respectively communicated with the oil return pipeline and are used for circulating return oil; the heat exchange member is arranged outside the oil side pipeline in a matching mode and used for taking out return oil heat flowing through the oil side pipeline.

As a further preferable aspect of the present invention, the oil cooling mechanism is further provided with a cooling-side pipe for circulation of a cooling medium;

and the cooling side pipeline is matched with the heat exchange component and is used for taking away the return oil heat brought out by the heat exchange component.

As a further preferable mode of the present invention, a circulating cooling pipeline is further provided for conveying circulating cooling water; and both ends of the cooling side pipeline are respectively communicated with the circulating cooling pipeline, so that the circulating cooling water can circulate from the cooling side pipeline.

As a further preferable mode of the present invention, one end of the oil return line is communicated with the oil return port, and the other end of the oil return line is communicated with the oil delivery line between the oil consumption mechanism and the first metering device.

Preferably, one end of the oil return pipeline is communicated with the oil return port, the other end of the oil return pipeline is communicated with the oil tank, and a second metering device is arranged between the cold oil mechanism and the oil tank.

As a further preferable mode of the present invention, a second check valve is disposed on the oil return pipeline, so that the return oil flows in one direction from one end close to the oil return port to the other end in the oil return pipeline

As a further preferable mode of the present invention, an oil-gas separation member is further disposed on the oil return pipeline, and is used for realizing oil-gas separation in the oil return pipeline.

As a further preferable mode of the present invention, a return gas line is further provided corresponding to the oil-gas separation member, and is disposed between the oil-gas separation member and the oil tank, and is configured to deliver the separated oil gas into the oil tank.

As a further preferable aspect of the present invention, at least one bypass line is provided on the oil delivery line, and an overflow valve is provided on the bypass line.

Generally, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects:

(1) according to the ship oil consumption metering system with the return oil cooling function, the fuel oil flow between the oil tank and the oil consumption mechanism is accurately metered by arranging the flowmeter on the oil delivery pipeline communicated with the oil delivery pipeline, so that the oil quantity in the oil tank is accurately monitored; meanwhile, the mode of arranging the cooling device on the oil return pipeline realizes the efficient cooling of the return oil, and effectively avoids the abnormal operation of the oil consumption mechanism and the oil quantity metering error caused by the oil temperature of the return oil.

(2) According to the ship oil consumption metering system with the return oil cooling function, the accuracy of the newly-fed fuel oil and the return oil conveying direction is ensured by arranging the one-way valves on the oil conveying pipeline, the oil conveying pipeline and the return oil pipeline, the oil quantity metering error caused by the reverse flow of the oil is effectively avoided, and the normal and stable operation of an oil consumption mechanism is ensured.

(3) According to the ship oil consumption metering system with the return oil cooling function, the oil-gas separation operation of the return oil in the return oil pipeline is realized by arranging the oil-gas separation component on the return oil pipeline, a small amount of oil-gas mixed in the return oil is separated and discharged, the return oil after oil-gas separation is remitted into new fuel oil, the influence of the oil-gas in the fuel oil on the operation of the oil consumption component is avoided, and the normal operation of a ship is effectively ensured.

(4) According to the ship oil consumption metering system with the return oil cooling function, the return oil cooling pipeline is provided with the oil cooling mechanism, so that the return oil generated by the oil consumption mechanism is quickly cooled, the oil return cannot influence the oil quantity metering and the normal operation of the oil consumption mechanism due to the temperature of the return oil, measures such as return oil/oil-gas separation of the oil-gas separation component, prevention of fuel oil backflow by a plurality of one-way valves, bypass pipelines and the like are taken, the metering error in the ship fuel oil change process is remarkably reduced, the ship fuel oil monitoring precision is improved, the accurate control of the ship oil quantity state is further realized, and the effective guarantee is provided for the safe running of a ship.

Drawings

Fig. 1 is a schematic structural diagram of a fuel consumption metering system of a ship with an oil return cooling function in embodiment 1 of the present invention;

fig. 2 is a schematic structural diagram of a fuel consumption metering system of a ship with an oil return cooling function in embodiment 2 of the present invention;

FIG. 3 is a schematic diagram of the matching form of the cold oil mechanism and the circulating cooling pipeline in a preferred embodiment of the utility model;

in all the figures, the same reference numerals denote the same features, in particular:

1. an oil tank; 2. a fuel consumption mechanism; 3. an oil pipeline; 4. an oil return line; 5. a cold oil mechanism; 6. a circulating cooling pipeline; 7. a first metering device; 8. a second metering device;

501. an oil side line; 502. a cooling side pipe; 503. a heat exchange member; 601. cooling the branch pipe;

701. an oil delivery pipeline; 702. an internal oil return line; 703. a flow meter; 704. a first check valve; 705. a second one-way valve; 706. an oil-gas separation member; 707. a gas return line; 708. a bypass line; 709. an overflow valve; 710. and an oil monitoring component.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Example (b):

the fuel consumption metering system of the ship with the return oil cooling function in the preferred embodiment of the utility model is shown in FIG. 1. The tank 1 is connected to one or more consumers 2 via a delivery line 3. Meanwhile, a first metering device 7 for metering the oil delivery amount is arranged on the oil delivery pipeline 3, the fuel oil in the oil tank 1 is input into the first metering device 7 through the oil delivery pipeline 3 for metering, and the metered fuel oil flows into the oil consumption mechanism 2 again; the oil consumption mechanism 2 consumes fuel oil and generates return oil, the return oil is output through the return oil pipeline 4, and the cold oil mechanism 5 is correspondingly arranged on the return oil pipeline 4 and used for cooling the return oil.

Specifically, in the preferred embodiment of the present application, both ends of the cold oil mechanism 5 are respectively communicated with the oil return pipeline 4, so that the cold oil mechanism 5 can cool the return oil on the premise of ensuring the conduction of the return oil. Preferably, the cold oil mechanism 5 comprises an oil side pipeline 501 and a heat exchange component 503, and two ends of the oil side pipeline 501 are communicated with the oil return pipeline 4 to ensure normal conduction of return oil; the heat exchange member 503 is correspondingly disposed outside the oil side pipeline 501, and is configured to take out heat of return oil flowing through the oil side pipeline 501, so as to achieve an effect of reducing the temperature of the return oil.

Of course, in order to achieve rapid heat dissipation of the return oil, in a preferred embodiment of the present application, a cooling-side pipeline 502 is provided in the cold oil mechanism 5 for circulation of a cooling medium. This cooling side pipeline 502 matches with heat transfer component 503 and sets up for take away the oil return heat that heat transfer component 503 brought out, and then improve the cooling effect of cold oil mechanism 5 greatly.

Preferably, a circulating cooling pipeline 6 is further disposed corresponding to the cooling side pipeline 502, and both ends of the cooling side pipeline 502 are communicated with the circulating cooling pipeline 6, so that the cooling medium in the circulating cooling pipeline 6 can circulate in the cooling side pipeline 502, and the cooling efficiency of the oil cooling mechanism 5 is effectively improved.

Further preferably, in order to avoid the influence of the small pipe diameter of the cooling side pipeline 502 on the circulation rate of the cooling medium in the circulating cooling pipeline 6, in a preferred embodiment of the present application, cooling branch pipes 601 are arranged side by side on the circulating cooling pipeline 6. Both ends of the cooling branch pipe 601 are communicated with the circulating cooling pipeline 6, and both ends of the cooling side pipeline 502 are connected in the cooling branch pipe 601, so as to avoid the influence of the cooling side pipeline 502 on the circulation rate of the cooling medium in the circulating cooling pipeline 6.

Further preferably, in a preferred embodiment of the present application, valves are disposed at positions corresponding to the circulating cooling pipeline 6 and the cooling branch pipe 601, and are used for implementing the cutoff and the conduction of the pipelines.

Further, in the preferred embodiment of the present application, one end of the oil return line 4 is connected to an oil return port of the oil consumption mechanism 2, and the other end of the oil return line is communicated with the oil delivery line 3 between the oil consumption mechanism 2 and the first metering device 7, so that the return oil cooled by the cold oil mechanism 5 directly flows into the oil consumption mechanism 2, and the fuel oil is prevented from being metered for multiple times while the fuel oil temperature is ensured to be normal, thereby ensuring the fuel oil metering accuracy.

Of course, the communication mode of the oil return line 4 is not limited to the above-mentioned mode, in a preferred embodiment of the present application, one end of the oil return line 4 is communicated with the oil return port of the oil consumption mechanism 2, and the other end thereof is directly communicated with the oil return port of the oil tank 1, and the oil return line 4 is correspondingly provided with a second metering device 8 for metering the amount of the return oil, so as to ensure the accurate detection and metering of the amount of the oil in the oil tank 1.

Further, in the preferred embodiment of the present application, an oil feed pipe 701, an internal oil return pipe 702 and a flow meter 703 are provided in the first metering device 7. The oil supply pipeline 701 is directly communicated with the oil delivery pipeline 3, and a flow meter 703 is arranged on the oil supply pipeline 701 and is used for metering the new fuel oil flowing out of the oil tank 1.

Further preferably, one end of the internal oil return pipeline 702 is connected with one end of the oil return pipeline 4, which is far away from the oil return port, and the other end of the internal oil return pipeline is communicated with the oil feed pipeline 701, which is far away from the flowmeter 703 side, so that return oil generated in the oil consumption mechanism 2 can be directly merged into newly-fed fuel oil after metering, metering errors of multiple metering attempts on the fuel oil are avoided, and the metering accuracy of the fuel oil monitoring and metering system is improved.

Further preferably, in order to avoid the backflow phenomenon of the fuel during the circulation process, in a preferred embodiment of the present application, the fuel quantity monitoring and metering device is further provided with a first check valve 704. The first check valve 704 is arranged on the line of the return line 4 facing away from the return opening and the flow meter 703, so that the newly introduced fuel can flow in one direction from the fuel tank 1 to the consuming mechanism 2. The return oil conveyed along the return oil pipeline 4 is prevented from being poured into the flow meter 703 along the oil conveying pipeline 701, even into the oil tank 1, so that the measurement fault of the fuel oil is avoided, and the accuracy of the fuel oil measurement is ensured.

Accordingly, in another preferred embodiment of the present application, a second check valve 705 is correspondingly disposed on the oil return line 4, so that the return oil flows in one direction from one end near the oil return port to the other end in the oil return line 4, and the new fuel flowing out from the fuel tank 1 is prevented from directly flowing into the oil return port of the fuel consumption mechanism 2 along the oil return line 4, thereby ensuring the normal operation of the fuel consumption mechanism 2.

Further, since a part of oil gas is contained in the return oil generated by the fuel consumption mechanism 2, if the return oil containing the oil gas is directly mixed into the newly-charged fuel oil and is resupplied to the fuel consumption mechanism 2 for consumption, the normal operation of the fuel consumption mechanism 2 is affected to a certain extent. Therefore, in order to realize stable oil-gas separation, in another preferred embodiment of the present application, an oil-gas separation member 706 is correspondingly disposed on the oil return line 4 to realize separation of oil-gas and oil in the return oil.

Preferably, the oil-gas separation member 706 is provided with an oil inlet port, an oil port and an oil-gas port, wherein the oil inlet port is communicated with the oil return pipeline 4 close to the oil return port side, the oil port is communicated with the oil return pipeline 4 away from the oil return port side, and the oil-gas separated return oil is conveyed to the oil return pipeline 4 away from the oil return port again; meanwhile, the oil and gas separated by the oil and gas separating component 706 is discharged from the oil and gas port.

Further preferably, the oil gas delivered from the corresponding oil gas port can be delivered into the corresponding device by setting the return gas pipeline 707. For example, the return line 707 communicates with a return air port provided on the oil tank 1 to complete the reception of the separated oil gas. In addition, an oil monitoring component 710 may be preferably disposed on the gas return line 707, and is configured to detect whether a liquid substance is present in the gas return line 707 (if the liquid substance is detected in the display pipe, it is proved that the oil-gas separation component 706 has a fault), so that a worker can timely know relevant information when the oil-gas separation component 706 has a fault.

Further, in order to avoid the problem of clogging of the fuel supply from the fuel tank 1 to the fuel consumption means 2, in another preferred embodiment of the present application, at least one bypass line 708 is provided in the line between the fuel tank 1 and the fuel consumption means 2. Preferably, an overflow valve 709 is arranged on the bypass pipeline 708, so that the bypass pipeline 708 is only communicated when the oil pressure in the pipeline is too high (i.e. the oil pressure in the bypass pipeline 708 is too high due to the blockage of the normal oil pipeline 3), thereby effectively avoiding the shutdown of the oil consumption mechanism 2 caused by the blockage of the oil pipeline 3, the oil pipeline 701 and the like, and ensuring the normal operation of the ship.

Further preferably, an oil monitoring component 710 is further disposed corresponding to the bypass line 708 for monitoring the interior of the bypass line 708; if oil is detected in the bypass pipeline 708, information that the main oil pipeline (the oil feeding pipeline 701 and/or part of the oil conveying pipeline 3) corresponding to the position where the bypass pipeline 708 is arranged is blocked is timely transmitted to a worker, so that the fault can be discharged as soon as possible, and the occurrence of an operation accident of the oil consumption mechanism 2 is effectively avoided.

In addition, in order to realize the overall management of monitoring and metering the fuel flow of each metering device, in another preferred embodiment of the present application, the data collected by each metering device in the ship fuel amount monitoring and metering system all transmits the flow data to the metering data collection gateway through the data transmission line, and then the metering data collection gateway transmits the data to the metering industrial control terminal, and the metering industrial control terminal processes the metering data to obtain the real-time data of the fuel in the fuel tank 1.

Preferably, the metering industrial control terminal can also directly transmit the real-time data of the fuel in the fuel tank 1 to the clients at all places of the ship through the internal network of the ship so as to ensure that the staff can know the fuel quantity of the ship at the first time and provide guarantee for long-time navigation of the ship.

In view of the above, the fuel gauge operation of the fuel consumption gauge system with return oil cooling function in the preferred embodiment of the present invention mainly monitors and measures the amount of change in the fuel tank 1 in real time by using a plurality of gauges. The method specifically comprises the following working steps:

fuel consumption metering: the fuel oil flows out from an oil outlet of the oil tank 1 and flows into an oil delivery pipeline 701 of the first metering device 7 along an oil delivery pipeline 3; the fuel oil flows out of the first metering device 7 after being metered by the flowmeter 703 and flows into the oil consumption mechanism 2 through the oil pipeline 3; meanwhile, return oil generated in the operation process of the oil consumption mechanism 2 is input into the oil return pipeline 4 from an oil return port, and the return oil is remitted into new inlet fuel oil after oil-gas separation operation through an oil-gas separation component 706 arranged on the oil return pipeline 4 and enters the oil consumption mechanism 2 again.

And then, integrating and calculating according to the oil quantity measured by each measuring device, and obtaining real-time accurate data of ship fuel oil, so that a worker can master the real state of the ship oil quantity at the first time.

According to the ship fuel consumption metering system with the return oil cooling function, the return oil cooling pipeline 4 is provided with the cold oil mechanism 5, so that the return oil generated by the fuel consumption mechanism 2 is quickly cooled, the return oil cannot influence the fuel quantity metering and the normal operation of the fuel consumption mechanism 2 due to the temperature of the return oil, measures such as return oil liquid/oil gas separation of the oil gas separation component 706, prevention of fuel oil backflow by a plurality of check valves, the bypass pipeline 708 and the like are adopted, the metering error in the ship fuel oil change process is remarkably reduced, the ship fuel oil monitoring precision is improved, the accurate control of the ship fuel oil state is further realized, and the safe running of a ship is effectively guaranteed.

It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the utility model, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (10)

1. A ship oil consumption metering system with an oil return cooling function comprises an oil tank and at least one oil consumption mechanism, wherein the oil tank is communicated with the oil consumption mechanism through an oil pipeline; it is characterized in that the preparation method is characterized in that,

the oil delivery pipeline is provided with a first metering device for metering the fuel flow of the oil tank flowing into the oil consumption mechanism;

and an oil return pipeline is also arranged corresponding to the oil return port of the oil consumption mechanism, and a cold oil mechanism is also arranged on the oil return pipeline and used for cooling return oil.

2. The fuel consumption measuring system of a ship with return oil cooling function according to claim 1, wherein the cold oil mechanism includes an oil-side pipe and a heat exchange member;

two ends of the oil side pipeline are respectively communicated with the oil return pipeline and are used for circulating return oil; the heat exchange member is arranged outside the oil side pipeline in a matching mode and used for taking out return oil heat flowing through the oil side pipeline.

3. The fuel consumption measuring system of the ship with the return oil cooling function according to claim 2, wherein the cold oil mechanism is further provided with a cooling side pipeline for circulation of a cooling medium;

and the cooling side pipeline is matched with the heat exchange component and is used for taking away the return oil heat brought out by the heat exchange component.

4. The oil consumption metering system of the ship with the return oil cooling function as claimed in claim 3, wherein a circulating cooling pipeline is further provided for conveying the cooling medium; and both ends of the cooling side pipeline are respectively communicated with the circulating cooling pipeline, so that the cooling medium can circulate from the cooling side pipeline.

5. The ship oil consumption metering system with the return oil cooling function according to any one of claims 1 to 4, wherein one end of the return oil pipeline is communicated with the oil return port, and the other end of the return oil pipeline is communicated with the oil pipeline between the oil consumption mechanism and the first metering device.

6. The ship oil consumption metering system with the return oil cooling function according to any one of claims 1 to 4, wherein one end of the return oil pipeline is communicated with the return port, the other end of the return oil pipeline is communicated with the oil tank, and a second metering device is arranged between the cold oil mechanism and the oil tank.

7. The ship oil consumption metering system with the return oil cooling function according to any one of claims 1 to 4, wherein a second one-way valve is arranged on the return oil pipeline, so that return oil flows in one way from one end close to the oil return port to the other end in the return oil pipeline.

8. The ship oil consumption metering system with the return oil cooling function according to any one of claims 1 to 4, wherein an oil-gas separation member is further arranged on the return oil pipeline and used for realizing oil-gas separation in the return oil pipeline.

9. The fuel consumption measuring system of a ship with a return oil cooling function according to claim 8, wherein a return gas pipeline is further provided corresponding to the oil-gas separation member, and is disposed between the oil-gas separation member and the fuel tank, and is used for conveying separated oil gas into the fuel tank.

10. The ship oil consumption metering system with the return oil cooling function according to any one of claims 1 to 4, wherein at least one bypass pipeline is arranged on the oil pipeline, and an overflow valve is arranged on the bypass pipeline.

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