Single point mooring oil transportation relay system

Abstract

The utility model discloses a single-point mooring oil transportation relay system which comprises an oil tanker pump, a relay pump station and a delivery pipe. And the tanker pump is arranged on the tanker. The relay pump station is arranged between the mooring point and the coast. The relay pump station is used for increasing the oil conveying pressure. The delivery pipe is divided into two sections, one end of the first delivery pipe section is connected with the tanker pump, the other end is connected with the relay pump station, one end of the second delivery pipe section is connected with the relay pump station, and the other end is connected with the shoreside storage tank. The rear half of the conveying pipe is pressurized through the booster pump station, and then the conditions that the tail end of the conveying pipe is insufficient in pressure and low in oil conveying efficiency due to the fact that the conveying pipe is too long are improved.

Description

Technical Field

[0001] This utility model relates to the field of marine oil transportation, and in particular to a single-point mooring oil transfer relay system. Background Technology

[0002] After the oil tanker completes its single-point mooring, the oil is transported to shore storage tanks via pipeline. Due to the high viscosity of crude oil, when the mooring point is far from the storage tank, the pressure output by the tanker's own pump is lost during the transportation process, resulting in insufficient pressure at the end of the pipeline. When the pressure is insufficient, the transportation efficiency decreases, and the oil may evaporate and vaporize in the pipeline, creating a potential hazard. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a single-point mooring oil transfer relay system, which can avoid insufficient pipeline pressure and improve transportation efficiency.

[0004] A single-point mooring oil transfer relay system according to an embodiment of the present invention includes a tanker pump mounted on an oil tanker; a relay pumping station located between the mooring point and the shore, the relay pumping station being used to increase the oil transfer pressure; and a transfer pipe consisting of two sections, the first section having one end connected to the tanker pump and the other end connected to the relay pumping station, and the second section having one end connected to the relay pumping station and the other end connected to a shore storage tank.

[0005] The system offers at least the following advantages: A single-point moored oil transfer relay system includes a tanker pump, a relay pumping station, and a transfer pipeline. The tanker pump is located on the oil tanker. The relay pumping station is located between the mooring point and the shore. The relay pumping station is used to increase the oil transfer pressure. The transfer pipeline consists of two sections: the first section is connected at one end to the tanker pump and at the other end to the relay pumping station; the second section is connected at one end to the relay pumping station and at the other end to a shore storage tank. By pressurizing the latter half of the transfer pipeline through the relay pumping station, the system addresses the issue of insufficient pressure at the end of an excessively long pipeline, which can lead to low oil transfer efficiency.

[0006] According to some embodiments of the present invention, the relay pumping station includes a station building and a relay pump. The relay pump is installed in the station building, which is built at sea. The input end of the relay pump is connected to the delivery pipe from the oil tanker pump, and the output end of the relay pump is connected to an onshore storage tank.

[0007] According to some embodiments of this utility model, the relay pump is a multi-stage centrifugal pump.

[0008] According to some embodiments of the present invention, the inside of the conveying pipe is coated with a drag-reducing coating.

[0009] According to some embodiments of the present invention, the relay pump station further includes a heat tracing mechanism, which transfers the heat generated by the relay pump to the outside of the delivery pipe for pipeline heat tracing.

[0010] According to some embodiments of the present invention, the heat tracing mechanism includes a heat exchanger, a heat pump, and a heat tracing pipe. The heat exchanger is disposed on the relay pump and connected to the heat pump, and the heat tracing pipe is wound around the delivery pipe.

[0011] According to some embodiments of the present invention, the heat tracing pipe is wound around the side of the delivery pipe near the input end of the relay pump station.

[0012] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0014] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model. Detailed Implementation

[0015] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0016] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0017] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0018] Reference Figure 1This utility model discloses a single-point mooring oil transfer relay system, comprising a tanker pump 10, a relay pumping station 20, and a transfer pipe 30. The tanker pump 10 is mounted on the oil tanker. The relay pumping station 20 is located between the mooring point and the shore. The relay pumping station 20 is used to increase the oil transfer pressure. The transfer pipe 30 consists of two sections: one end of the first section is connected to the tanker pump 10, and the other end is connected to the relay pumping station 20; the other end of the second section is connected to the relay pumping station 20, and the other end is connected to a shore storage tank.

[0019] It is understandable that by using the relay pump station 20 to pressurize the latter half of the delivery pipe 30, the problem of insufficient pressure at the end of the delivery pipe 30 due to its excessive length and low oil delivery efficiency can be improved.

[0020] It should be noted that, in the embodiments of this utility model, during startup, the relay pump 22 is started first to establish pipeline back pressure before starting the turbine pump, to avoid crude oil vaporization in the low-pressure section. During shutdown, the turbine pump 10 is stopped first, and the turbine pump is stopped only after the relay pump has emptied the pipeline, to prevent water hammer.

[0021] The relay pumping station 20 includes a station building 21 and a relay pump 22. The relay pump 22 is located in the station building 21. The station building 21 is built at sea. The input end of the relay pump 22 is connected to the delivery pipe 30 from the tanker pump 10. The output end of the relay pump 22 is connected to an onshore storage tank.

[0022] It is understandable that by setting up station 21 and relay pump 22, the conveying pipe 30 can be pressurized to improve the conveying efficiency.

[0023] It is worth noting that in some embodiments of this utility model, the relay pump 22 is a multi-stage centrifugal pump.

[0024] Understandably, multistage centrifugal pumps typically consist of 4-10 stages connected in series with multiple impellers, achieving single-pump heads ranging from hundreds to thousands of meters, meeting the high-pressure requirements for long-distance transport such as 70 kilometers. For example, a 6-stage pump with a single-stage head of 200m can achieve a total head of approximately 1200m ≈ 12 MPa. High flow rate compatibility: The rated flow rate range is wide, from 1000-5000 m³ / h, compatible with the flow characteristics of oil turbine pumps (typically centrifugal pumps), preventing "cavitation" or "pressure buildup."

[0025] It is worth noting that in some embodiments of this invention, the inside of the conveying pipe 30 is coated with a drag-reducing coating. It is understood that in some embodiments of this invention, coating the inner wall of the conveying pipe 30 with a drag-reducing coating can further reduce conveying pressure loss and improve the conveying energy efficiency ratio.

[0026] It is worth noting that in some embodiments of the utility model, the drag-reducing coating is a polymer coating, such as a polyurethane coating, which reduces turbulent frictional resistance by forming a smooth elastic surface.

[0027] The relay pump station 20 also includes a heat tracing mechanism 23, which transfers the heat generated by the relay pump 22 to the outside of the delivery pipe 30 for pipeline heat tracing.

[0028] Understandably, transferring the heat energy generated by the relay pump 22 to the conveying pipe 30 through the heat tracing mechanism 23 can heat the crude oil, reduce its viscosity, and improve the conveying efficiency.

[0029] The heat tracing mechanism 23 includes a heat exchanger 231, a heat pump 232, and a heat tracing pipe 233. The heat exchanger 231 is mounted on the relay pump 22 and connected to the heat pump 232. The heat tracing pipe 233 is wound around the delivery pipe 30.

[0030] The heat tracing pipe 233 is wound around the side of the delivery pipe 30 near the input end of the relay pump station 20.

[0031] It is worth noting that in some embodiments of the utility model, the heat generated by the relay pump 22 is transported to the front part of the conveying pipe 30 of the heat exchange pump 232 to heat the crude oil that is about to enter the relay pump 22, reduce its viscosity, thereby reducing the power required by the relay pump 22 and improving the energy consumption ratio of crude oil transportation.

[0032] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0033] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A single-point mooring oil transfer relay system, characterized in that, include: Tanker pump (10), said tanker pump (10) is mounted on the tanker; A relay pumping station (20) is located between the mooring point and the coast, and the relay pumping station (20) is used to increase the oil transportation pressure; The conveying pipe (30) is divided into two sections. One end of the first section of the conveying pipe (30) is connected to the oil tanker pump (10), and the other end is connected to the relay pump station (20). One end of the second section of the conveying pipe (30) is connected to the relay pump station (20), and the other end is connected to the shore storage tank.

2. The single-point mooring oil transfer relay system according to claim 1, characterized in that, The relay pump station (20) includes a station building (21) and a relay pump (22). The relay pump (22) is located in the station building (21), which is built at sea. The input end of the relay pump (22) is connected to the delivery pipe (30) from the oil tanker pump (10), and the output end of the relay pump (22) is connected to an onshore storage tank.

3. A single-point mooring oil transfer relay system according to claim 2, characterized in that, The relay pump (22) is a multi-stage centrifugal pump.

4. A single-point mooring oil transfer relay system according to claim 2, characterized in that, The inside of the delivery pipe (30) is coated with a drag-reducing coating.

5. A single-point mooring oil transfer relay system according to claim 2, characterized in that, The relay pump station (20) also includes a heat tracing mechanism (23), which transfers the heat generated by the relay pump (22) to the outside of the delivery pipe (30) for pipe heat tracing.

6. A single-point mooring oil transfer relay system according to claim 5, characterized in that, The heat tracing mechanism (23) includes a heat exchanger (231), a heat pump (232), and a heat tracing pipe (233). The heat exchanger (231) is mounted on the relay pump (22) and connected to the heat pump (232). The heat tracing pipe (233) is wound around the delivery pipe (30).

7. A single-point mooring oil transfer relay system according to claim 6, characterized in that, The heat tracing pipe (233) is wound around the side of the delivery pipe (30) near the input end of the relay pump station (20).

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