A refueling vehicle with a residual oil dilution system

Abstract

This invention proposes a refueling truck with a residual oil dilution system. The pipeline condensate residual oil dilution system includes: a dilution tank connected to the oil pipeline, containing diluent oil for diluting the condensate residual oil in the pipeline; a residual oil tank connected to the oil pipeline; and a return oil pump connected to the oil pipeline, used to pump the diluent oil from the dilution tank to the oil pipeline and to pump the mixture of diluent oil and residual oil in the oil pipeline to the residual oil tank. This invention solves the problem of residual viscous oil condensing at low temperatures, affecting the normal operation of equipment during subsequent operations. The pipeline condensate residual oil dilution system is simple, safe, stable, and reliable.

Description

[0001] This application is a divisional application of Chinese patent application filed on August 27, 2021, with application number “202111008038.X” and invention title “Fueling Truck”. Technical Field

[0002] This invention relates to the field of special vehicles, and more specifically, to a refueling truck with a residual oil dilution system. Background Technology

[0003] Currently, the oil transported by ships at the dock is mainly heavy oil. During the spring and winter months, when ambient temperatures are low, heavy oil poses a risk of condensation. As the temperature drops, the viscosity of heavy oil decreases dramatically, significantly affecting its consistency. This means that when transport is intermittently stopped, residual heavy oil inside the pipeline will condense on the pipe walls, affecting the normal operation of the pipeline. Simultaneously, the condensed residual oil can also hinder pipeline cleaning operations, preventing the complete drainage of residual oil from the pipeline, thus wasting fuel and causing environmental pollution. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] In view of this, one object of the present invention is to provide a pipeline condensate oil dilution system.

[0006] Another object of the present invention is to provide a refueling vehicle.

[0007] To achieve the above objectives, the first aspect of the present invention provides a pipeline condensate residual oil dilution system, comprising: a dilution oil tank connected to an oil pipeline, the dilution oil tank containing diluent oil for diluting pipeline condensate residual oil; a residual oil tank connected to the oil pipeline; and a return oil pump connected to the oil pipeline for pumping the diluent oil in the dilution oil tank to the oil pipeline and pumping the mixture of diluent oil and residual oil in the oil pipeline to the residual oil tank.

[0008] The pipeline condensate residual oil dilution system provided in this application includes a dilution oil tank, a residual oil tank, and a return oil pump. The return oil pump inputs the diluent oil from the dilution oil tank into the oil pipeline, and pumps the mixture of diluent oil and residual oil in the oil pipeline to the residual oil tank. Specifically, the dilution oil tank contains diluent oil for diluting pipeline condensate residual oil. The dilution oil tank is connected to the oil pipeline, and the return oil pump, connected to the oil pipeline, pumps the diluent oil from the dilution oil tank into the oil pipeline. The diluent oil in the dilution oil tank mixes with the residual high-viscosity oil in the oil pipeline, thereby diluting the residual high-viscosity oil in the oil pipeline. The viscosity of the diluted residual oil decreases, and the return oil pump can pump the mixture of diluent oil and residual oil in the oil pipeline to the residual oil tank, thus solving the problem of residual viscous oil condensing at low temperatures and affecting the normal operation of equipment during subsequent operations. Furthermore, the pipeline condensate residual oil dilution system is simple, safe, stable, and reliable.

[0009] In addition, the pipeline condensate oil dilution system in the above embodiments provided in this application may also have the following additional technical features:

[0010] In the above technical solution, the pipeline condensate residual oil dilution system also includes: a pressure detection device, used to detect the pressure signal of the oil in the oil pipeline, and output an alarm signal when the pressure signal is greater than or equal to a preset pressure threshold.

[0011] In this technical solution, the pipeline condensate residual oil dilution system also includes a pressure detection device. This device detects the pressure signal of the oil in the pipeline and outputs an alarm signal when the pressure signal is greater than or equal to a preset pressure threshold. By using the pressure signal for system alarms and interlocking it with the operation of the oil pump, the safe, stable, and reliable operation of the system can be ensured.

[0012] In the above technical solution, the pipeline condensate residual oil dilution system also includes a temperature detection device for detecting the temperature signal of the oil in the oil pipeline.

[0013] In this technical solution, the pipeline condensate dilution system also includes a temperature detection device, which is used to detect the temperature signal of the oil in the pipeline. Monitoring the temperature signal ensures the safe, stable, and reliable operation of the system.

[0014] In the above technical solution, the pipeline condensate residual oil dilution system also includes: an air compressor, connected to the oil pipeline, used to compress air and input it into the oil pipeline to purge the oil pipeline.

[0015] In this technical solution, the pipeline condensate residual oil dilution system also includes an air compressor, which is a device for compressing gas. The air compressor is connected to the oil pipeline and is used to compress air and input it into the oil pipeline to purge the pipeline. After the oil transfer operation is completed, the remaining oil in the loading and unloading pipeline is swept into the ship's oil tank by compressed air, and any remaining oil is sucked into the residual oil tank by the return oil pump, thus achieving the purpose of draining the residual oil.

[0016] In any of the above technical solutions, the return oil pump includes a rotary piston pump.

[0017] In this technical solution, the return oil pump includes a rotary piston pump, which is self-priming, valveless, and positive discharge pump. It has a compact structure, is easy to maintain, and can transport various viscous or particulate media.

[0018] In any of the above technical solutions, the residual oil tank includes: a body, a direct-reading level gauge, a breather valve, a cleaning cover, a level alarm sensor, an oil return pump inlet and outlet, and a bottom oil drain valve.

[0019] In this technical solution, the residual oil tank includes a main body, a direct-reading level gauge, a breather valve, a cleaning cover, a level alarm sensor, an inlet and outlet for the return oil pump, and a bottom oil drain valve. The direct-reading level gauge is located on the side of the main body, allowing direct observation of the oil level within the tank. The breather valve is located on the top of the main body. The cleaning cover is also located on the top of the main body. The level alarm sensor triggers an alarm when the oil level in the tank exceeds a predetermined height. The inlet and outlet for the return oil pump are located on the main body and connected to the return oil pump. The bottom oil drain valve is located at the bottom of the main body and is used to drain the bottom oil from the residual oil tank.

[0020] Furthermore, the direct-reading level gauge is located on the side of the main body, allowing direct observation of the oil level in the residual oil tank.

[0021] Furthermore, a breather valve is located on the upper part of the main body; a cleaning cover is located on the upper part of the main body; and a liquid level alarm sensor is used to trigger an alarm when the liquid level in the residual oil tank exceeds a predetermined height.

[0022] Furthermore, the oil return pump inlet and outlet are located on the main body and connected to the oil return pump; the bottom oil drain valve is located at the bottom of the main body and is used to drain the bottom oil in the residual oil tank.

[0023] The second aspect of the present invention provides a refueling truck, including the pipeline condensate dilution system of any of the technical solutions in the first aspect above.

[0024] In this technical solution, the pipeline condensate oil dilution system adopting any of the above technical solutions achieves all the beneficial effects of the above technical solutions, which will not be elaborated here.

[0025] Additional aspects and advantages of the invention will become apparent in the following description or may be learned by practice of the invention. Attached Figure Description

[0026] Figure 1 This is a schematic front view of a pipeline condensate oil dilution system according to an embodiment of the present invention;

[0027] Figure 2 This is a top view of a pipeline condensate oil dilution system according to an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the main structure of the residual oil tank according to an embodiment of the present invention;

[0029] Figure 4 This is a top view of the residual oil tank according to an embodiment of the present invention;

[0030] Figure 5 This is a schematic block diagram of a pipeline condensate oil dilution system according to an embodiment of the present invention;

[0031] Figure 6 This is a schematic block diagram of a pipeline condensate oil dilution system according to an embodiment of the present invention;

[0032] Figure 7 This is a schematic block diagram of the structure of a refueling truck according to an embodiment of the present invention;

[0033] Figure 8 This is a schematic block diagram of the structure of a refueling truck according to an embodiment of the present invention;

[0034] Figure 9 This is a schematic block diagram of the structure of a refueling truck according to an embodiment of the present invention;

[0035] Figure 10 This is a schematic diagram of the power system structure principle according to an embodiment of the present invention;

[0036] Figure 11 This is a schematic block diagram of a refueling truck according to an embodiment of the present invention.

[0037] in, Figures 1 to 11 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0038] 100: Pipeline condensate dilution system; 110: Oil pipeline; 200: Dilution oil tank; 300: Residual oil tank; 310: Main body; 320: Direct-reading level gauge; 330: Breather valve; 340: Cleaning cover; 350: Level alarm sensor; 360: Return oil pump inlet / outlet; 370: Bottom oil drain valve; 400: Return oil pump; 500: Pressure detection device; 600: Temperature detection device; 700: Air compressor; 800: Fuel truck; 810: Hydraulic system; 812: Hydraulic pump; 814: Hydraulic oil tank; 816: Hydraulic pipeline; 820: Engine; 830: Power take-off; 840: Compensating joint. Detailed Implementation

[0039] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0040] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0041] The following reference Figures 1 to 4 This describes stator assemblies, motors, and electrical devices provided according to some embodiments of the present invention.

[0042] The following reference Figures 1 to 11 A pipeline condensate oil dilution system and a refueling truck are described according to some embodiments of the present invention.

[0043] Example 1:

[0044] like Figure 1 As shown, a pipeline condensate residual oil dilution system 100 according to an embodiment of the present invention is connected to the oil delivery pipeline 110 of a refueling truck 800, and includes a dilution oil tank 200, a residual oil tank 300, and a return oil pump 400. The dilution oil tank 200 is connected to the oil delivery pipeline 110 and contains diluent oil for diluting pipeline condensate residual oil; the residual oil tank 300 is connected to the oil delivery pipeline 110; the return oil pump 400 is connected to the oil delivery pipeline 110 and is used to pump the diluent oil in the dilution oil tank to the oil delivery pipeline 110, and to pump the mixture of diluent oil and residual oil in the oil delivery pipeline 110 to the residual oil tank 300.

[0045] In this embodiment, the pipeline condensate residual oil dilution system 100 provided in this application includes a dilution oil tank 200, a residual oil tank 300, and a return oil pump 400. The return oil pump 400 inputs the diluent oil from the dilution oil tank 200 into the oil pipeline 110, and pumps the mixture of diluent oil and residual oil in the oil pipeline 110 to the residual oil tank 300. Specifically, the dilution oil tank 200 contains diluent oil for diluting pipeline condensate residual oil. The dilution oil tank 200 is connected to the oil pipeline 110. The return oil pump 400, connected to the oil pipeline 110, can pump the diluent oil from the dilution oil tank 200 into the oil pipeline 110. The diluent oil in the dilution oil tank 200 mixes with the residual high-viscosity oil in the oil pipeline 110, thereby diluting the residual high-viscosity oil in the oil pipeline 110. The diluted residual oil has a lower viscosity. Through the return oil pump 400, the mixture of diluted oil and residual oil in the oil pipeline 110 can be pumped to the residual oil tank 300, thus solving the problem of residual viscous oil solidifying at low temperatures and affecting the normal operation of the equipment during subsequent operations. Furthermore, the pipeline solidified residual oil dilution system 100 is simple, safe, stable, and reliable.

[0046] Example 2:

[0047] like Figure 1 As shown, a pipeline condensate residual oil dilution system 100 according to an embodiment of the present invention is connected to the oil delivery pipeline 110 of a refueling truck 800, and includes a dilution oil tank 200, a residual oil tank 300, and a return oil pump 400. The dilution oil tank 200 is connected to the oil delivery pipeline 110 and contains diluent oil for diluting pipeline condensate residual oil; the residual oil tank 300 is connected to the oil delivery pipeline 110; the return oil pump 400 is connected to the oil delivery pipeline 110 and is used to pump the diluent oil in the dilution oil tank to the oil delivery pipeline 110, and to pump the mixture of diluent oil and residual oil in the oil delivery pipeline 110 to the residual oil tank 300.

[0048] In this embodiment, the pipeline condensate residual oil dilution system 100 provided in this application includes a dilution oil tank 200, a residual oil tank 300, and a return oil pump 400. The return oil pump 400 inputs the diluent oil from the dilution oil tank 200 into the oil pipeline 110, and pumps the mixture of diluent oil and residual oil in the oil pipeline 110 to the residual oil tank 300. Specifically, the dilution oil tank 200 contains diluent oil for diluting pipeline condensate residual oil. The dilution oil tank 200 is connected to the oil pipeline 110. The return oil pump 400, connected to the oil pipeline 110, can pump the diluent oil from the dilution oil tank 200 into the oil pipeline 110. The diluent oil in the dilution oil tank 200 mixes with the residual high-viscosity oil in the oil pipeline 110, thereby diluting the residual high-viscosity oil in the oil pipeline 110. The diluted residual oil has a lower viscosity. Through the return oil pump 400, the mixture of diluted oil and residual oil in the oil pipeline 110 can be pumped to the residual oil tank 300, thus solving the problem of residual viscous oil solidifying at low temperatures and affecting the normal operation of the equipment during subsequent operations. Furthermore, the pipeline solidified residual oil dilution system 100 is simple, safe, stable, and reliable.

[0049] like Figure 5 As shown, the pipeline condensate dilution system 100 further includes a pressure detection device 500, which is used to detect the pressure signal of the oil in the oil pipeline 110 and outputs an alarm signal when the pressure signal is greater than or equal to a preset pressure threshold. By using the pressure signal for system alarm and interlocking it with the operation of the oil pump, the safe, stable and reliable operation of the system can be ensured.

[0050] Example 3:

[0051] like Figure 1 As shown, a pipeline condensate residual oil dilution system 100 according to an embodiment of the present invention is connected to the oil delivery pipeline 110 of a refueling truck 800, and includes a dilution oil tank 200, a residual oil tank 300, and a return oil pump 400. The dilution oil tank 200 is connected to the oil delivery pipeline 110 and contains diluent oil for diluting pipeline condensate residual oil; the residual oil tank 300 is connected to the oil delivery pipeline 110; the return oil pump 400 is connected to the oil delivery pipeline 110 and is used to pump the diluent oil in the dilution oil tank to the oil delivery pipeline 110, and to pump the mixture of diluent oil and residual oil in the oil delivery pipeline 110 to the residual oil tank 300.

[0052] In this embodiment, the pipeline condensate residual oil dilution system 100 provided in this application includes a dilution oil tank 200, a residual oil tank 300, and a return oil pump 400. The return oil pump 400 inputs the diluent oil from the dilution oil tank 200 into the oil pipeline 110, and pumps the mixture of diluent oil and residual oil in the oil pipeline 110 to the residual oil tank 300. Specifically, the dilution oil tank 200 contains diluent oil for diluting pipeline condensate residual oil. The dilution oil tank 200 is connected to the oil pipeline 110. The return oil pump 400, connected to the oil pipeline 110, can pump the diluent oil from the dilution oil tank 200 into the oil pipeline 110. The diluent oil in the dilution oil tank 200 mixes with the residual high-viscosity oil in the oil pipeline 110, thereby diluting the residual high-viscosity oil in the oil pipeline 110. The diluted residual oil has a lower viscosity. Through the return oil pump 400, the mixture of diluted oil and residual oil in the oil pipeline 110 can be pumped to the residual oil tank 300, thus solving the problem of residual viscous oil solidifying at low temperatures and affecting the normal operation of the equipment during subsequent operations. Furthermore, the pipeline solidified residual oil dilution system 100 is simple, safe, stable, and reliable.

[0053] like Figure 6 As shown, the pipeline condensate dilution system further includes a temperature detection device 600, which is used to detect the temperature signal of the oil in the oil pipeline 110. Temperature signal monitoring ensures the safe, stable, and reliable operation of the system.

[0054] Example 4:

[0055] like Figure 1 As shown, a pipeline condensate residual oil dilution system 100 according to an embodiment of the present invention is connected to the oil delivery pipeline 110 of a refueling truck 800, and includes a dilution oil tank 200, a residual oil tank 300, and a return oil pump 400. The dilution oil tank 200 is connected to the oil delivery pipeline 110 and contains diluent oil for diluting pipeline condensate residual oil; the residual oil tank 300 is connected to the oil delivery pipeline 110; the return oil pump 400 is connected to the oil delivery pipeline 110 and is used to pump the diluent oil in the dilution oil tank to the oil delivery pipeline 110, and to pump the mixture of diluent oil and residual oil in the oil delivery pipeline 110 to the residual oil tank 300.

[0056] In this embodiment, the pipeline condensate residual oil dilution system 100 provided in this application includes a dilution oil tank 200, a residual oil tank 300, and a return oil pump 400. The return oil pump 400 inputs the diluent oil from the dilution oil tank 200 into the oil pipeline 110, and pumps the mixture of diluent oil and residual oil in the oil pipeline 110 to the residual oil tank 300. Specifically, the dilution oil tank 200 contains diluent oil for diluting pipeline condensate residual oil. The dilution oil tank 200 is connected to the oil pipeline 110. The return oil pump 400, connected to the oil pipeline 110, can pump the diluent oil from the dilution oil tank 200 into the oil pipeline 110. The diluent oil in the dilution oil tank 200 mixes with the residual high-viscosity oil in the oil pipeline 110, thereby diluting the residual high-viscosity oil in the oil pipeline 110. The diluted residual oil has a lower viscosity. Through the return oil pump 400, the mixture of diluted oil and residual oil in the oil pipeline 110 can be pumped to the residual oil tank 300, thus solving the problem of residual viscous oil solidifying at low temperatures and affecting the normal operation of the equipment during subsequent operations. Furthermore, the pipeline solidified residual oil dilution system 100 is simple, safe, stable, and reliable.

[0057] like Figure 2 As shown, the pipeline condensate residual oil dilution system 100 further includes an air compressor 700, which is a device for compressing gas. The air compressor 700 is connected to the oil pipeline 110 and is used to compress air and input it into the oil pipeline 110 to purge the oil pipeline 110. After the oil transfer operation is completed, the remaining oil in the loading and unloading pipeline is swept into the ship's oil tank by compressed air, and the impure oil is sucked into the residual oil tank 300 by the return oil pump 400, thus achieving the purpose of draining the residual oil.

[0058] In any of the above embodiments, the return oil pump 400 includes a rotary piston pump, which is self-priming, valveless, positive discharge pump, with a compact structure, convenient maintenance, and the ability to transport various viscous or particulate media.

[0059] like Figure 3 and Figure 4As shown, in any of the above embodiments, the residual oil tank 300 includes a body 310, a direct-reading level gauge 320, a breather valve 330, a cleaning cover 340, a level alarm sensor 350, an oil return pump inlet / outlet 360, and a bottom oil drain valve 370. The direct-reading level gauge 320 is located on the side of the body 310, allowing direct observation of the oil level in the residual oil tank 300. The breather valve 330 is located on the upper part of the body 310. The cleaning cover 340 is located on the upper part of the body 310. The level alarm sensor 350 is used to trigger an alarm when the oil level in the residual oil tank 300 exceeds a predetermined height. The oil return pump inlet / outlet 360 is located on the body and connected to the oil return pump 400. The bottom oil drain valve 370 is located at the bottom of the body and is used to drain the bottom oil from the residual oil tank 300.

[0060] Furthermore, a direct-reading level gauge 320 is installed on the side of the main body 310, through which the level of the oil contained in the residual oil tank 300 can be directly observed.

[0061] Furthermore, a breather valve 330 is located on the upper part of the main body 310; a cleaning cover 340 is located on the upper part of the main body 310; and a liquid level alarm sensor 350 is used to trigger an alarm when the liquid level in the residual oil tank 300 exceeds a predetermined height.

[0062] Furthermore, the oil return pump inlet / outlet 360 is located on the main body 310 and connected to the oil return pump 400; the bottom oil drain valve 370 is located at the bottom of the main body 310 and is used to drain the bottom oil in the residual oil tank 300.

[0063] Example 5:

[0064] like Figure 8 As shown, another embodiment of the present invention proposes a refueling truck 800, which includes the pipeline condensate dilution system 100 of any of the above embodiments.

[0065] In this embodiment, by employing the pipeline condensate oil dilution system 100 of any of the above embodiments, all the beneficial effects of the above embodiments are achieved, which will not be repeated here.

[0066] like Figure 9 and Figure 10As shown, it should be noted that the refueling truck 800 also includes an engine 820, a power take-off (PTO) 830, a hydraulic system 810, and a return oil pump 400. The hydraulic system 810 includes a hydraulic pump 812, a hydraulic oil tank 814, and hydraulic lines 816. The refueling truck engine 820 is equipped with a PTO 830 for direct power take-off. The engine 820 drives the hydraulic pump 812 through the PTO 830. The hydraulic pump 812 is used to deliver hydraulic oil through the hydraulic lines 816 to the return oil pump 400 to drive the return oil pump 400. The hydraulic oil tank 814 contains the hydraulic oil.

[0067] The speed regulation of the hydraulic pump 812 is achieved by automatically controlling and regulating the speed of the automobile engine through an electronic speed governor. The power take-off 830 drives the hydraulic pump 812 through the drive shaft to provide a power source to meet the power requirements of the viscous oil dilution operation. The various operation processes of the device are realized through the vehicle control system.

[0068] like Figure 11 As shown, the refueling truck 800 also includes at least two oil pipelines 110. A compensating joint 840 is provided between adjacent oil pipelines 110 to eliminate unbalanced vibrations between them. The compensating joint 840 is made of a flexible material. The main function of the compensating joint 840 is to eliminate unbalanced vibrations between adjacent oil pipelines 110 and prevent the oil pipelines 110 from breaking.

[0069] The technical solution of the present invention has been described in detail above with reference to the accompanying drawings. The technical solution of the present invention can effectively solve the problem of residual viscous oil solidifying at low temperature, which affects the normal operation of equipment during subsequent operations. Furthermore, the pipeline solidified residual oil dilution system is simple, safe, stable, and reliable.

[0070] In the description of this invention, the term "a plurality of" refers to two or more. Unless otherwise explicitly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of the invention. The terms "connection," "installation," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0071] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0072] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A refueling truck with a residual oil dilution system, characterized in that, include: A pipeline condensate oil dilution system is connected to the oil delivery pipeline of the refueling truck, and the pipeline condensate oil dilution system includes: A dilution tank is connected to the oil pipeline and contains dilution oil for diluting residual oil condensed in the pipeline. An excess oil tank is connected to the oil pipeline. A return oil pump is connected to the oil pipeline and is used to pump the diluent oil in the diluent oil tank to the oil pipeline, and to pump the mixture of the diluent oil and the residual oil in the oil pipeline to the residual oil tank. The refueling vehicle also includes an engine, a power take-off unit, and a hydraulic system; The hydraulic system includes a hydraulic pump, a hydraulic tank, and hydraulic lines; The engine drives the hydraulic pump through the power take-off, and the hydraulic pump is used to deliver hydraulic oil through the hydraulic pipeline to the return oil pump to drive the return oil pump to work. The pipeline condensate oil dilution system also includes: An air compressor, connected to the oil pipeline, is used to compress air and input it into the oil pipeline to purge the oil pipeline. After the oil transfer operation is completed, the remaining oil in the loading and unloading pipeline is swept into the ship's oil tank by compressed air, and the impure oil is sucked into the residual oil tank by the return oil pump. The pipeline condensate oil dilution system also includes: A pressure detection device is used to detect the pressure signal of the oil in the oil pipeline, and outputs an alarm signal when the pressure signal is greater than or equal to a preset pressure threshold. The pressure signal is also used to interlock with the operation of the oil pump. The refueling truck also includes at least two oil pipelines, and a compensating joint is provided between two adjacent oil pipelines; the compensating joint is used to eliminate unbalanced vibrations between two adjacent oil pipelines. The speed of the hydraulic pump is adjusted by an electronic speed governor to control the speed of the engine, and the power take-off drives the hydraulic pump via a drive shaft to provide a power source. The residual oil tank includes: a main body, a direct-reading level gauge, a breather valve, a cleaning cover, a level alarm sensor, an oil return pump inlet and outlet, and a bottom oil drain valve.

2. The refueling truck according to claim 1, characterized in that, The pipeline condensate oil dilution system also includes: A temperature detection device is used to detect the temperature signal of the oil in the oil pipeline.

3. The refueling vehicle according to claim 1 or 2, characterized in that, The return oil pump includes a rotary piston pump.

4. The refueling truck according to claim 1, characterized in that, The direct-reading level gauge is located on the side of the main body, allowing direct observation of the oil level in the residual oil tank.

5. The refueling truck according to claim 1, characterized in that, The breather valve is located on the upper part of the main body; the cleaning cover is located on the upper part of the main body; the liquid level alarm sensor is used to sound an alarm when the liquid level in the residual oil tank exceeds a predetermined height.

6. The refueling truck according to claim 1, characterized in that, The oil return pump inlet and outlet are located on the main body and connected to the oil return pump; the bottom oil drain valve is located at the bottom of the main body and is used to drain the bottom oil in the residual oil tank.

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