TWI697614B - Fuel oil transfer system - Google Patents

Abstract

To provide a fuel oil transfer system that can suppress unnecessary waste of fuel oil stored in a plurality of tanks.

A fuel oil transfer system in which fuel oil transferred from a plurality of fuel oil storage tanks (2) is heated by the fuel oil separation tank (3), and the heated fuel oil is returned to The fuel oil storage tank barrel (2) is mixed with the fuel oil in the fuel oil storage tank barrel (2) so that the temperature of the fuel oil in the fuel oil storage tank barrel (2) can be locally increased. Its characteristic is that it will be used now When the fuel oil storage tank barrel (2A) is used as the transfer origin, and the fuel oil storage tank barrel (2B) other than the fuel oil storage tank barrel currently in use is used as the transfer destination, set the corresponding transfer origin ( 2A) and the transfer path of the fuel oil in the arrangement structure of the fuel oil storage tank at the transfer destination (2B).

Description

Fuel oil transfer system

[0001] The present invention relates to a fuel oil transfer system. In more detail, it relates to a fuel oil transfer system for transferring fuel oil between fuel oil storage tanks.

[0002] The fuel oil used in boilers such as ships and generators is stored in storage parts such as tanks and is supplied to the internal combustion engine to be consumed. In addition, unlike fuel oil, lubricating oil for the main engine such as the internal combustion engine is also stored in a storage portion such as a tank and used in the same way as the fuel oil.　　The fuel oil and lubricating oil storage part used in ships is a case where a plurality of tanks are prepared for the type of corresponding properties and different storage amounts (for example, Patent Document 1).　　 Patent Document 1 discloses that when replenishing the lubricating oil reduced by the consumption of the internal combustion engine, one of a plurality of tanks storing lubricating oils of different properties is selected.　　The purpose of selecting from lubricants with different properties is to supply lubricants suitable for the properties of the lubricating oil in the internal combustion engine to prevent the lack of lubricant that causes the deterioration of the operating conditions in the internal combustion engine.　　[0003] Although the structure disclosed in Patent Document 1 is different from fuel oil, it is conceptually common to the fuel oil at the point where the substance supplied into the internal combustion engine gate is supplied from a plurality of tanks.　　 However, the structure disclosed in Patent Document 1 is based on the premise that only one of a plurality of tanks is selected, but it does not consider the transfer of objects having the same properties as the fuel oil from tanks to each other.　　 Therefore, because the fuel oil remaining in the tank is left without being consumed, the implementation of energy saving to suppress unnecessary waste of fuel consumption is disadvantageous. [Patent Document] [Patent Document] 　　[0004] 　　 [Patent Document 1] JP 2015-86866 A

[Problem to be solved by the present invention] 　　 [0005] Here, the subject of the present invention is to provide a fuel oil transfer system that can suppress the consumption of fuel oil stored in a plurality of tanks and cause unnecessary waste. In particular, it provides a fuel oil transfer system that can smoothly transfer without increasing the viscosity increase caused by the temperature drop of the fuel oil regardless of the arrangement structure of the fuel oil storage tank. [Means to Solve the Problem] 　　[0006] In order to solve this problem, the present invention is a fuel oil transfer system in which fuel oil transferred from one of a plurality of fuel oil storage tanks is passed through a fuel oil separation tank The barrel is heated, and the temperature of the fuel oil in the fuel oil storage tank barrel can be locally localized by returning the heated fuel oil to the aforementioned fuel oil storage tank barrel and mixing it with the fuel oil in the fuel oil storage tank barrel. Improved. When the fuel oil storage tank barrel currently in use is used as the transfer origin, and the fuel oil storage tank barrel other than the fuel oil storage tank barrel currently in use is used as the transfer destination, the settings corresponding to the aforementioned transfer origin and The transfer path of the fuel oil of the arrangement structure of the fuel oil storage tank of the transfer destination. [Effects of the invention] 　　[0007] According to the present invention, it is possible to set a transfer path for supplying higher-temperature fuel oil to the fuel oil storage tank of the transfer destination. As a result, the fuel oil storage tank at the transfer destination can reliably prevent the increase in the transfer resistance caused by the increase in viscosity due to the temperature drop of the fuel oil, and the smooth transfer can be achieved.

[0009] Hereinafter, a mode for carrying out the present invention will be described. "Figure 1" shows the structure of the fuel oil transfer device 1 used in the fuel oil transfer system of the form used to implement the present invention. The “fuel oil transfer device 1” is provided with a fuel oil separation tank 3 and a fuel oil tank 4 communicating with a plurality of fuel oil storage tanks 2 including a pair.　　The fuel oil separation tank 3 is a tank used to heat the fuel oil. The fuel oil is heated to a temperature of 70 to 80°C, which is one example, by a heater (not shown).　　[0010] The fuel oil storage tank 2 and the fuel oil separation tank 3 are connected by a transfer pipe 5, and a transfer pump 6, a temperature sensor 7, and a pressure sensor 8 are arranged in the middle. The "temperature sensor 7" detects the temperature of the fuel oil moving in the pipe on the suction side of the fuel filling port side of the transfer pump 6, for example. The 　　 pressure sensor 8 is provided to monitor the pressure change of the fuel oil sucked into the transfer pump 6. The pressure change is used to determine the change in the flow resistance corresponding to the change in the viscosity of the fuel oil. In particular, when the viscosity increases and the flow resistance increases, the pressure on the inlet side of the transfer pump 6 tends to become vacuum. Therefore, if the pressure change of the vacuumization tendency is detected, heating for reducing the viscosity of the fuel oil is necessary.　　 In the fuel oil separation tank 3, a liquid level sensor 9 for detecting the liquid level of the fuel oil sucked by the transfer pump 6 is provided. The 　　 liquid level sensor 9 is a sensor that can detect the liquid level when the fuel oil is introduced into the fuel oil separation tank 3 by a predetermined amount. The liquid level sensor 9 is used to stop the driving of the transfer pump 6 when it detects that the fuel oil is introduced into the fuel oil separation tank 3 by a predetermined amount. The 　　 sensor is not limited to the above-mentioned position, and is also installed inside the fuel oil storage tank 2 (refer to Fig. 5). The sensors LG1 and LG2 are residual quantity sensors that detect the residual quantity of fuel oil in the fuel oil storage tank by the level or pressure.　　[0011] The commonly used fuel oil tank 4 is a tank used to temporarily store the heated fuel oil after cleaning it, and to supply fuel oil to the internal combustion engine. The fuel oil storage tank 2 and the fuel oil tank 4 are connected by a suction pipe 10, and a downflow pump 11 that can discharge fuel oil little by little is arranged in the middle. Part of the fuel oil stored in the fuel oil tank 4 is flowed down to the fuel oil storage tank 2 by the down pump 11 to increase the temperature of the fuel oil in the fuel oil storage tank 2. "The reason for the name of the downflow pump 11 in this case is that the fuel oil common tank 4 is arranged at a higher position than the fuel oil storage tank 2 as a premise. That is, because the fuel oil is discharged from the upper fuel oil common tank 4 to the lower fuel oil storage tank 2 to flow down, it is expressed as flowing down.　　[0012] In the structure shown in FIG. 1, a structure in which the fuel oil separation tank 3 and the fuel oil common tank 4 are respectively connected to the suction pipe 10 is adopted. Therefore, the fuel oil in each tank 3, 4 can be set in such a way that the flow path of the heated fuel oil from the tank 3, 4 or any of these tanks to the fuel oil storage tank 2 can be set. The outlet flow path is provided with a valve 12. [0013] The above fuel oil transfer device 1 heats the fuel oil sucked from the fuel oil storage tank 2 toward the fuel oil separation tank 3 by the transfer pump 6, and the heated fuel oil is cleaned and purified. The fuel oil common tank 4 is introduced, and the stored fuel oil is supplied to the internal combustion engine or the like.　　 Part of the fuel oil temporarily stored in the fuel oil separation tank 3 and or the fuel oil common tank 4 is returned to the fuel oil storage tank 2 by flowing down the pump 11. As a result, the fuel oil in the fuel oil storage tank 2 is partially heated to 36-40°C by mixing with the heated fuel oil.　　[0014] In the present embodiment, the operation time between the pumps, for example, the transfer pump 6 is about 15 minutes and the down pump 11 is about 45 minutes are selectively operated alternately. Among this time, the operating time of the transfer pump 6 may correspond to the time until the level of the fuel oil is detected by the level sensor 9 in the fuel oil separation tank 3, for example. . That is, the number of revolutions of the transfer pump 6 can be judged as fuel if the level of the fuel oil is detected by the level sensor 9 within the operating time when the fuel oil is flowing at a rated flow rate based on the drive current, etc. The viscosity of the fuel oil that is not caused by the flow resistance of the oil. If the operating time exceeds this time, it can be judged that the viscosity of the fuel oil is higher and the fluidity is poor. In addition, the liquid level sensor 9 detects that the fuel oil introduced into the fuel oil separation tank 3 reaches a predetermined amount, and stops the operation of the transfer pump 6 to prevent the fuel oil from overflowing.　　 In addition, when there is no fuel consumption during parking, the operation time of the transfer pump 6 is shortened, and the time until the liquid level sensor 9 is activated is about 6 minutes, for example.　　[0015] The path for sucking fuel oil from the fuel oil storage tank 2 to the fuel oil separation tank 3 using the transfer pump 6 is shown by symbols F1 to F5 in the first figure. The path for the fuel oil to flow down from the fuel oil common tank 4 to the fuel oil storage tank 2 using the downflow pump 11 is shown by arrows F10 to F13 in FIG. 2.　　The fuel oil transfer device 1 using such a structure has been disclosed in the applicant's previous proposal, namely, Japanese Patent Application Laid-Open No. 2012-17123.　　[0016] The fuel oil transfer device 1 having the above configuration uses a heating method that suppresses the increase in the flow resistance of the fuel oil.　　 Heating in this case means to increase the temperature of the unheated fuel oil by mixing the heated fuel oil with the unheated fuel oil.　　 Hereafter, the heating method performed using the fuel oil transfer device 1 will be described. [0017] The fuel oil transfer device 1 can be selected from the normal operation mode performed when the viscosity of the fuel oil is low and the flow resistance is low, and the heating operation performed when the viscosity is high and the flow resistance increases. Any of the patterns. The normal operation mode is a mode in which the transfer pump 6 that operates in response to the operating state of the liquid level sensor 9 and the downflow pump 11 that supplies fuel oil into the fuel oil storage tank 2 are alternately operated to circulate the fuel oil. In the heating operation mode, in addition to forcibly stopping the transfer pump 6, the fuel oil intercepted by the fuel oil suction side of the transfer pump 6 is heated, and the fuel oil storage is also heated by the fuel oil returned to the fuel oil storage tank 2 The processing mode of the fuel oil in the tank 2. The heating operation mode is preferably implemented until the viscosity of the fuel oil trapped on the transfer pump 6 side reaches a value that does not increase the flow resistance.　　The conditions for implementing the heating operation mode can use the following parameters.　　 That is, the parameters are used at least: the temperature and pressure of the fuel oil sucked into the transfer pump 6 and the operating time of the transfer pump 6. Regarding the operating time of the transfer pump 6, refer to the operating time until the liquid level sensor 9 is activated, and the timing time of the timer provided in the transfer pump 6 itself, as described above. If all or any one or a plurality of these various parameters are consistent with the predetermined conditions necessary for heating, the heating operation mode is executed.　　[0018] Hereinafter, the structure and function used to implement this operation mode will be explained using Figure 3.　　 The transfer pump 6 and the downflow pump 11 are in their operating states and are controlled by the control unit 20 shown in Fig. 3.　　[0019] The control unit 20 connects the temperature sensor 7, the pressure sensor 8, and the liquid level sensor 9 provided in the transfer pipe 5 to the input side. The driving part of the transfer pump 6 and the driving part of the downflow pump 11 are connected to the output side of the control part 20, respectively. Both the transfer pump 6 and the downflow pump 11 use a type that can control the flow rate and the flow rate by rotating the motors (members shown by the symbols M1 and M2 in the first and second figures). [0020] In Fig. 3, reference numeral 15 is, for example, an operation panel used to display the operating time of each pump 6, 11 and the flow rate of fuel oil, and to input necessary conditions such as the fuel consumption amount and return amount. , Symbol 16 is the timing device. The “timer 16” measures, for example, the time required from the time when the operation of the transfer pump 6 is started to the detection of the liquid level by the liquid level sensor 9. Therefore, when the operation time until the liquid level detection by the liquid level sensor 9 is too long while the transfer pump 6 is operating, it can be judged that the viscosity is high and the flow resistance is large. In other words, when the operation time of the transfer pump 6 is excessively long, the viscosity of the fuel oil flowing through the transfer pump 6 is high, and it can be judged that it is in a state where the flow resistance is large. The transfer pump 6 may have its own timing device for measuring the operating time. In this case, when the transfer pump 6 is operated for longer than the operating time set in advance by its own timer, it can be determined that the fuel oil has a high viscosity and a high flow resistance. The "transfer pump 6" is provided with a heating operation mode described later that is forcibly stopped when the operation time set in advance is exceeded.　　[0021] In addition, it is a monitoring target item used for determining that the viscosity of the fuel oil is the predetermined condition of the viscosity increasing the flow resistance, and the driving current value of the motor used as the driving source of the transfer pump 6 can be targeted. The drive current value is determined in order to obtain the preset number of revolutions and torque of the motor, but when the number of revolutions and torque change, it will return to the original state, especially when the number of revolutions and torque decrease. The drive current value increases. Here, the increase in the viscosity of the fuel oil can be determined by monitoring the increase in the driving current value, and the operation mode can be switched.　　[0022] The normal operation mode selected by the control unit 20 circulates the fuel oil while keeping the viscosity of the fuel oil at a value that does not increase the flow resistance. According to this operation mode, a decrease in the temperature of the fuel oil stored in the fuel oil storage tank 2 is suppressed to prevent the viscosity from becoming high. The control unit 20 in the normal operation mode monitors: the temperature and pressure of the fuel oil introduced into the transfer pump 6 and the operating time of the transfer pump 6, and the driving current value of the motor that is further applied to the drive source of the transfer pump 6 Variety.　　 These monitoring target items are used as predetermined conditions for judging the change in the viscosity of fuel oil, especially the increase in viscosity, when the following four types of cases occur.　　 (1) When the viscosity of fuel oil rises and reaches the temperature below which the flow resistance increases.　　 (2) The pressure change on the fuel oil introduction side of the transfer pump 6 is a case where a vacuum tends to occur.　　 (3) The operating time of the transfer pump 6 until the liquid level sensor 9 is activated is increasing.　　 (4) When the drive current value of the drive source of the transfer pump 6 is rising.　　 If these specified conditions are not met and the fuel oil viscosity does not increase, the normal operation mode is executed. When the normal operation mode is executed, the cycle of sucking fuel oil from the fuel oil storage tank 2 to the fuel oil separation tank 3 and the fuel oil separation tank 3 and part of the fuel oil common tank 4 are alternately repeated The fuel oil flows downward toward the fuel oil storage tank 2 in a circulation. However, even in the middle of the cycle, the transfer pump 6 can be stopped in response to the operation of the liquid level sensor 9. The operation status of each pump 6 and 11 when this operation mode is executed is displayed on the operation panel 15. [0023] When the monitoring of the above-mentioned monitoring target item is continued, and the normal operation mode is executed, when all, any one of, or a plurality of the predetermined conditions of the monitoring target item are the same, the normal operation mode is switched to the heating operation mode .　　[0024] In the heating operation mode, the transfer pump 6 is forcibly stopped, and the down pump 11 is operated so that the heated fuel oil flows toward the fuel oil storage tank 2. At this time, the heated fuel oil flows toward the fuel oil storage tank 2 while being mixed with the fuel oil intercepted at this position via the fuel oil introduction side of the transfer pump 6. The fuel oil is, for example, a filter (a member indicated by a symbol FT in FIG. 2) that flows countercurrently, and has a function of eliminating clogging of the filter. [0025] In the control unit 20, the temperature and pressure of the monitored item can be directly monitored by the sensor, but it is related to the operating time of the transfer pump 6 until the liquid level is detected using the liquid level sensor 9. Based on the state shown in Fig. 4, it is judged whether to execute the heating operation mode.　　 In Fig. 4, the vertical axis shows the amount of fuel oil (the amount of actuation of the liquid level sensor 9), and the horizontal axis shows the time.　　 In the same figure, as the viscosity of the fuel oil becomes higher, the time until the liquid level sensor 9 is actuated when the transfer pump 6 is output at a constant rate becomes longer. Therefore, the time (the time indicated by the symbol T in Figure 4) until the fuel oil with a lower viscosity is introduced into the fuel oil separation tank 3 until the liquid level sensor 9 is actuated as a reference, is more than this time When it grows up (in Figure 4, the time indicated by the symbol T1), it can be judged that the fuel oil has a higher viscosity. In addition, in the case where the transfer pump 6 itself has a timing device, comparing the set time of the timing device with the actual operation time, the actual operation time is increased, and it can be determined that the viscosity of the fuel oil is high.　　[0026] When all, or a part of, or plural of the predetermined conditions of the monitoring target item are the same, if the heating operation mode is selected, the heated fuel oil is sent to the fuel oil storage tank 2. Thereby, not only the fuel oil in the fuel oil storage tank 2 is directly mixed, but the fuel oil caught on the suction side of the transfer pump 6 is also mixed, and the temperature of the fuel oil can be increased. As a result, since the fuel oil is heated in the oil passage just before the fuel oil is sucked into the transfer pump 6, the viscosity of the fuel oil flowing into the transfer pump 6 can be ensured to decrease. [0027] The monitoring target items are temperature, pressure, and the operating time of the transfer pump. Further, the change in the drive current value in the motor of the transfer pump reaches the condition to eliminate the increase in viscosity, and if it does not match the predetermined condition, it is a return. To normal operation mode.　　[0028] The fuel oil transfer device 1 using the above heating method optimizes the transfer path of the fuel oil used for preheating the fuel oil storage tank to the transfer destination.

That is, the arrangement structure of the fuel oil storage tanks has a parallel structure in which the fuel oil storage tanks of the transfer origin and the transfer destination are arranged side by side, or the fuel oil storage tanks of the transfer origin and the transfer destination. It is a series structure in which plural numbers are arranged consecutively in the same row. Figure 5 (A) shows the parallel structure, and Figure 6 (A) shows the series structure.

In this embodiment, it is possible to optimize the transfer path of the fuel oil to the fuel oil storage tank barrel of the transfer destination in accordance with the arrangement structure of the fuel oil storage tank barrel.

The optimization of the transfer path is performed for the purpose of transferring in a state where the temperature of the fuel oil does not increase the viscosity of the transfer resistance.

In the parallel structure, the fuel oil storage tank containing the heated fuel oil is used as the transfer origin in current use, and the fuel oil is transferred to the fuel oil storage tank of the transfer destination. That is, a fuel oil transfer path is set between the fuel oil storage tank barrel 2A at the transfer origin and the fuel oil storage tank barrel 2B at the transfer destination.

When the tandem structure is used for the parallel structure, especially when the fuel oil is exchanged between the tanks in the same row, it is based on that there is no fuel oil transfer path in the same row, and the fuel oil separation tank 3 and the transfer A transfer path is set between the fuel oil storage tanks at the destination.

Fig. 5 shows a structure in which fuel oil storage tank barrels of a parallel structure are used as objects to be transferred.

As shown in Fig. 5(A), in addition to the transfer pipe 5 and the suction pipe 10, it is also on the downstream side of the flow direction of the transfer pump 6, that is, the discharge side and the transfer destination. Between the fuel suction positions of the fuel oil storage tank 2B, there is provided a return pipe 13 that communicates at the two positions to form a transfer path for parallel connection.

In the transfer pipe 5, the suction pipe 10, and the return pipe 13, there are arranged on-off valves V1 to V7 and V1A, which are used to set the transfer direction of the fuel oil when the fuel oil is transferred in the transfer path for parallel connection. V2A. For convenience of description, each on-off valve is called as follows. The opening and closing valves V1, V1A, V2, V2A are called tank side opening and closing valves, the opening and closing valves V3, V4 are referred to as the upstream side opening and closing valve of the transfer pipe and the downstream side opening and closing valve of the transfer tube, and the opening and closing valve V7 is called the return pipe side opening and closing. valve.

These opening and closing valves V1 to V7, V1A, and V2A are opened and closed by the control unit 20 used to drive the driving motors M1 and M2 of the transfer pump 6 and the flow down pump 11.

The transfer of fuel oil targeted for the parallel structure uses the route shown in Fig. 5(B).

The fuel oil in the fuel oil storage tank 2A of the transfer origin is discharged by the transfer pump 6 and is transferred to the fuel oil storage tank 2B of the transfer destination through the return pipe 13.

In order to set the transfer path for the parallel connection using the return pipe 13, the tank side opening and closing valves V1A, V1, the upstream side opening and closing valve V3 of the transfer pipe, the return tube side opening and closing valve V7, and the tank side are set along the direction of the fuel oil flow. The on-off valve V2A is opened by the control unit 20, and the fuel oil is transferred through the transfer path for the parallel connection indicated by the thick arrow.

The transfer path for this parallel connection can directly transfer the heated fuel oil from the fuel oil storage tank 2A at the transfer origin of the storage. The oil is transferred to the fuel oil storage tank 2B of the transfer destination. As a result, it is possible to omit the work of preheating the fuel oil storage tank 2B of the transfer destination in order to suppress the increase in the viscosity of the fuel oil to be transferred.

Fig. 6 shows a structure for replacing the fuel oil storage tank barrel with a tandem structure as an object.

In the tandem structure, in the same row, the fuel oil storage tanks of the transfer origin and the transfer destination are juxtaposed. In the configuration shown in Fig. 6, for example, among the fuel oil storage tanks 2B and 2B1 displayed as the transfer destinations, the fuel oil storage tank that is the origin of the transfer in current use has the symbol 2B1, and The fuel oil storage tank of the transfer destination is marked 2B.

When transferring to the fuel oil storage tanks in the same row, the return flow path 13 shown in Fig. 5 is not used, but set: in the fuel oil separation tank 3 and the fuel oil storage tank of the transfer destination The transfer path for the transfer of the heated fuel oil (Figure 6(B)) during the series connection of the suction pipe 10 of the down-flow pump 11 that causes the heated fuel oil to flow down is arranged between 2B and the fuel oil separation tank 3 and the transfer origin of the fuel oil storage tank 2B1 can be connected in series by the transfer pump 6 for the transfer of the fuel oil transfer path (Figure 6 (C)), and these can be selected Either.

In the fuel oil storage tank 2B of the transfer destination, the fuel oil is transferred from the fuel oil separation tank 3 instead of the fuel oil storage tank 2B1 of the transfer origin (FIG. 6(B)). In order to set the transfer path for the heated fuel oil transfer during the series connection and the transfer path for the suction transfer during the series connection, the downflow pump 11 is operated to open and close the valve along the flow of the fuel oil flowing down from the fuel oil separation tank 3 12, V6, V5, V3, V2, V2A is opened by the control unit 20. Thereby, since the fuel oil storage tank 2B of the transfer destination is mixed with the fuel oil that has been heated, the increase in the viscosity of the fuel oil can be suppressed. For the convenience of description, among the on-off valves shown in Figure 6, the on-off valves with symbols V1B and V2B are called tank-side on-off valves, the on-off valve with symbols V5 is called the on-off valve on the downstream side of the downflow pump, and the symbol V6 The on-off valve of is called the on-off valve on the upstream side of the downflow pump, and the on-off valve of symbol 12 is called the on-off valve on the downflow start side.

In the above description, in order to set the transfer path for the heated fuel oil transfer during the series connection and the transfer path for the suction transfer during the series connection, the downflow pump 11 is operated along the flow from the fuel oil separation tank 3 The flow of fuel oil communicates with the on-off valve 12 on the start side of the downflow, the on-off valve V6 on the upstream side of the downflow pump, the on-off valve V5 on the downstream side of the downflow pump, the on-off valve V3 on the upstream side of the transfer pipe, and the fuel oil storage tank 2B before the transfer. The on-off valves V2 and V2A on the tank side in the pipeline are opened by the control unit 20. Thereby, since the fuel oil storage tank 2B of the transfer destination is mixed with the fuel oil that has been heated, the increase in the viscosity of the fuel oil can be suppressed.

The fuel oil separation tank 3 reduces the storage amount by the fuel oil being discharged.

Here, the fuel oil separation tank 3 transfers fuel oil from the fuel oil storage tank 2B1 at the transfer origin where the heated fuel oil is stored (Figure 6(C)). The path for transferring the fuel oil to the fuel oil separation tank 3 is a path set to use the transfer pump 6 located in the suction pipe 5. Specifically, the suction pipe 5 is set so that the fuel oil is sucked by the transfer pump 6 from the fuel oil storage tank 2B1 of the transfer origin to the fuel oil separation tank 3 is connected in series. The transfer path for suction and transfer during connection. In order to set the transfer path for suction and transfer when the fuel oil storage tank barrel 2B1 at the transfer origin is connected in series to the fuel oil separation tank barrel 3, the fuel oil is transferred along the fuel oil storage tank 2B1 at the transfer origin location. The direction of the flow of the pump 6 is controlled by the tank side opening and closing valves V2B, V2, the upstream side opening and closing valve V3 of the transfer tube, and the downstream side opening and closing valve V4 of the transfer tube arranged between the transfer pump 6 and the fuel oil separation tank 3 Section 20 is opened.

The control unit 20 is the arrangement structure of the fuel oil storage tank barrels to be the transfer target of the fuel oil, and selects the transfer route based on the result inputted on the operation panel 15.

When the transfer path for the parallel connection shown in Figure 5 is set, the amount of fuel remaining in the fuel oil storage tank 2A at the transfer origin is detected, and if the remaining amount is sufficient for transfer, the transfer The path is set.

If the fuel oil in the fuel oil separation tank 3 has a sufficient amount to be transferred, if the temperature is at a temperature that does not cause the viscosity to rise, set the heating as shown in Figure 6 (B) in the series connection Transfer path for fuel oil transfer. In addition, the transfer of fuel from the fuel oil storage tank 2B1 at the origin of the transfer to the fuel oil separation tank 3 using the transfer path for suction and transfer when connected in series as shown in Fig. 6(C) is in the fuel oil It is executed when the remaining amount of fuel in the storage tank 2B1 is sufficient. In contrast to this, in the case of the fuel oil transferred to the fuel oil separation tank 3, there is a case where the fuel oil stored in the tank with a small residual amount is aggregated. At this time, the temperature of the fuel oil remaining in each tank is preferably a temperature that does not increase the viscosity.

When the transfer of fuel oil for the arrangement structure shown in Figures 5 and 6 is completed, use the steps shown in Figures 1 and 2 to perform the fuel oil storage at the transfer destination Temperature management of the fuel oil in the tank.

According to the fuel oil transfer system of the above embodiment, when the fuel oil that is arranged in different rows or the fuel oil storage tanks in the same row is transferred, the heated fuel oil can be directly directed to the fuel oil of the transfer destination. Storage tank and barrel transfer. As a result, it is possible to omit the waste heat operation for the fuel oil storage tank barrel of the transfer destination, and it is possible to avoid the increase in viscosity and the increase in transfer resistance caused by the temperature drop of the transferred fuel oil.

[Industrial availability]

According to the present invention, the fuel oil in the fuel oil storage tank can be transferred to a new fuel oil storage tank, so the fuel oil in the fuel oil storage tank with little residue will not be left and can be used. In particular, regardless of the arrangement structure of the fuel oil storage tanks, even if the conventionally necessary transfer destination fuel oil storage tanks waste heat operation is omitted, the transfer resistance of the transferred fuel oil will not increase the point of smooth transfer. , Its availability is high.

1: Fuel oil transfer device used in fuel oil transfer system

2: Fuel oil storage tank

2A: Transfer the fuel oil storage tank of the origin

2B, 2B1: The fuel oil storage tank at the transfer destination

3: Fuel oil separation tank

4: Fuel oil commonly used tank

5: Transfer tube

6: Transfer pump

7: Temperature sensor

8: Pressure sensor

9: Liquid level sensor

10: suction pipe

11: Flow down the pump

12: Flow down start side on-off valve

13: return tube

15: Operation panel

16: Timing

20: Control Department

M1: Drive motor

LG1, LG2: Residual sensor

V1, V2, V1A, V1B, V2A, V2B: opening and closing valve on the tank side

V3: On-off valve on the upstream side of the transfer pipe

V4: On-off valve on the downstream side of the transfer pipe

V5: Flow down the on-off valve on the downstream side of the pump

V6: Flow down the on-off valve on the upstream side of the pump

V7: Return pipe side on-off valve

[0008] 　　 [Figure 1] A schematic diagram showing the configuration of the fuel oil transfer device used in the fuel oil transfer system of the embodiment of the present invention and the flow of fuel oil when the fuel oil is heated.　　[Figure 2] A schematic diagram showing the flow of fuel oil during fuel transfer performed by the fuel oil transfer device shown in Figure 1.　　[Figure 3] A block diagram for explaining the configuration of the control unit used in the fuel oil transfer device shown in Figure 1.　　 [Fig. 4] A line diagram for explaining the principle used in the determination of the predetermined conditions performed by the control unit as shown in Fig. 3.　　[Figure 5] A schematic diagram for explaining the configuration of the fuel oil transfer system based on the configuration shown in Figure 1.　　[Figure 6] A schematic diagram illustrating another example of a fuel oil transfer system based on the configuration shown in Figure 1.

1: Fuel oil transfer device used in fuel oil transfer system

2: Fuel oil storage tank

2A: Transfer the fuel oil storage tank of the origin

2B, 2B1: The fuel oil storage tank at the transfer destination

3: Fuel oil separation tank

4: Fuel oil commonly used tank

5: Transfer tube

6: Transfer pump

7: Temperature sensor

8: Pressure sensor

9: Liquid level sensor

10: suction pipe

11: Flow down the pump

12: Flow down start side on-off valve

13: return tube

M1, M2: components

LG1, LG2: Residual sensor

V1, V2, V1A, V1B, V2A, V2B: opening and closing valve on the tank side

V3: On-off valve on the upstream side of the transfer pipe

V4: On-off valve on the downstream side of the transfer pipe

V5: Flow down the on-off valve on the downstream side of the pump

V6: Flow down the on-off valve on the upstream side of the pump

V7: Return pipe side on-off valve

Claims (3)

A fuel oil transfer system in which fuel oil transferred from one of a plurality of fuel oil storage tanks through a transfer pipe is heated by a fuel oil separation tank, and the heated fuel oil is returned to the aforementioned fuel oil The storage tank barrel is mixed with the fuel oil in the fuel oil storage tank barrel to locally increase the temperature of the fuel oil in the fuel oil storage tank barrel, and is characterized in that: A fuel oil storage tank barrel as a transfer origin place, the aforementioned fuel oil storage tank barrels at the transfer origin location and the transfer destination fuel oil storage tank barrels are arranged in series, and are directed from the fuel oil storage tank barrels at the transfer origin location When the fuel oil storage tank barrel of the transfer destination is replaced with the fuel oil that has been heated, it is installed: the fuel oil separation tank barrel is arranged between the fuel oil separation tank barrel and the fuel oil storage tank barrel of the transfer destination to make the heating end When the fuel oil flows down to the fuel oil storage tank barrel, the downflow pump is connected in series to heat the transfer path for fuel oil transfer; the transfer path is provided between the fuel oil separation tank barrel and the fuel oil storage tank barrel at the origin of the transfer. In the meantime, a transfer pump installed to suck fuel oil from the fuel oil storage tank at the origin of the transfer to draw the fuel oil toward the fuel oil separation tank is connected in series. The transfer path for suction and transfer is arranged in the foregoing The on-off valves on the upstream and downstream sides of the down-flow pump on the upstream and downstream sides of the down-flow pump; the down-start side on-off valves for the downflow of fuel oil from the aforementioned fuel oil separation tank; The upstream-side opening and closing valves of the transfer pipe and the downstream-side opening and closing valves of the transfer pipe located on the upstream and downstream sides of the fuel oil transfer direction of the aforementioned transfer pump; a tank that opens and closes the flow path of the fuel oil storage tank toward the origin and destination of the transfer Barrel side opening and closing valve; set by the selective opening and closing control of the opening and closing valve: the transfer pump transfers the heated fuel oil toward the fuel oil separation tank barrel from the fuel oil storage tank barrel at the origin of the transfer, and The transfer path for suction and transfer when the fuel oil separation tank can be replenished in tandem connection, and the transfer path for the heated fuel oil from the fuel oil separation tank to the fuel oil storage tank of the transfer destination. Transfer path for fuel oil transfer after heating. A fuel oil transfer system in which fuel oil transferred from one of a plurality of fuel oil storage tanks through a transfer pipe is heated by a fuel oil separation tank, and the heated fuel oil is returned to the aforementioned fuel oil The storage tank barrel is mixed with the fuel oil in the fuel oil storage tank barrel to locally increase the temperature of the fuel oil in the fuel oil storage tank barrel, and is characterized in that: A fuel oil storage tank barrel as the origin of the transfer, in the transfer path for parallel connection of fuel oil to the fuel oil storage tank barrel of the transfer destination that is arranged in parallel to the fuel oil storage tank barrel of the transfer origin, It is provided with: a transfer pipe connecting the fuel oil storage tank and the fuel oil separation tank, and the transfer pipe is provided in the fuel oil storage tank to face the fuel oil in the front The transfer pump that sucks in the fuel oil separation tank, and the suction pipe that can discharge the heated fuel oil toward the fuel oil storage tank, and the suction pipe is provided to discharge the heated fuel oil little by little The discharge downflow pump, the return pipe connecting the discharge side of the transfer pump and the fuel oil storage tank, and the transfer pipe are respectively arranged in the upper and lower directions of the flow of fuel oil generated by the transfer pump. The on-off valve on the upstream side of the transfer pipe on the flow side, the on-off valve on the downstream side of the transfer pipe, and the upstream side of the downflow pump on the upper and lower flow sides of the fuel oil arranged in the suction pipe in the direction of the flow of the fuel oil generated by the transfer pump The on-off valve and the downstream side on-off valve of the downflow pump, and the on-off pipe side on-off valve that is arranged in the downflow pipe to open and close the downflow pipe, the transfer pump, the downflow pump, and each on-off valve are operated by the control unit The control unit is controlled to make: a residual quantity sensor that detects the fuel remaining in the fuel oil storage tank, and a temperature sensor that detects the temperature of the fuel oil moving in the transfer pipe , And a pressure sensor that detects the pressure of the fuel oil flowing into the transfer pump, and a timing device that measures the operating time of the transfer pump, are connected to the input side, and the drive parts of the transfer pump and the downflow pump are connected to the output Side connection, based on the result of comparing the monitoring target items from each sensor and timing device with the specified conditions, it is sucked into the transfer pump When the viscosity of the fuel oil is judged to be high, in order to forcibly stop the transfer pump and eliminate the increase in the viscosity of the fuel oil flowing through the transfer pump, the downflow pump is used to combine the heated fuel with the If the process of mixing the fuel oil intercepted on the fuel oil suction side of the transfer pump and flowing out toward the aforementioned fuel oil storage tank is performed, according to the arrangement structure of the aforementioned fuel oil storage tanks at the origin and destination of the transfer, if they are in parallel In the arrangement structure, the on-off valve on the downstream side of the transfer pipe on the downstream side of the fuel oil flow direction of the transfer pump of the transfer pipe is closed, and the on-off valve on the return pipe side in the return pipe is opened to set the transfer The aforementioned transfer path for parallel connection that directly communicates the fuel oil storage tank barrel from the origin to the transfer destination. A fuel oil transfer system in which fuel oil transferred from one of a plurality of fuel oil storage tanks through a transfer pipe is heated by a fuel oil separation tank, and the heated fuel oil is returned to the aforementioned fuel oil The storage tank barrel is mixed with the fuel oil in the fuel oil storage tank barrel to locally increase the temperature of the fuel oil in the fuel oil storage tank barrel, and is characterized in that: A fuel oil storage tank barrel as a transfer origin place, in the transfer path when the fuel oil is transferred in series to the transfer destination fuel oil storage tank barrels arranged in series to the aforementioned transfer origin fuel oil storage tank barrel, It is provided with: a transfer pipe connecting the fuel oil storage tank and the fuel oil separation tank, and the transfer pipe is provided in the fuel oil storage tank to face the fuel oil in the front The transfer pump that sucks in the fuel oil separation tank, and the suction pipe that can discharge the heated fuel oil toward the fuel oil storage tank, and the suction pipe is provided to discharge the heated fuel oil little by little The discharge downflow pump, the return pipe connecting the discharge side of the transfer pump and the fuel oil storage tank, and the transfer pipe are respectively arranged in the upper and lower directions of the flow of fuel oil generated by the transfer pump. The on-off valve on the upstream side of the transfer pipe on the flow side and the on-off valve on the downstream side of the transfer pipe, and the on-off valve on the upstream side of the downstream pump arranged in the suction pipe in the flow direction of the fuel oil generated by the transfer pump, and An on-off valve on the downstream side of the downflow pump, a return pipe-side on-off valve arranged in the return pipe to open and close the return pipe, and a valve that opens and closes the flow path to the fuel oil storage tank barrel of the transfer origin and the transfer destination The tank side opening and closing valve, the aforementioned transfer pump, the aforementioned downflow pump, and the respective opening and closing valves are controlled by a control unit whose operation status is controlled by the aforementioned control unit to detect the remaining amount of fuel in the aforementioned fuel oil storage tank The residual quantity sensor, the temperature sensor that detects the temperature of the fuel oil moving in the transfer pipe, and the pressure sensor that detects the pressure of the fuel oil flowing into the transfer pump, and the measurement of the transfer The timing of the pump's operation time is connected to the input side, and the aforementioned transfer pump and downflow pump are driven The part is connected to the output side, and when the viscosity of the fuel oil sucked into the transfer pump is judged to be high based on the result of comparing the monitored items from each sensor and timing device with the predetermined conditions, In order to forcibly stop the transfer pump and eliminate the increase in viscosity of the fuel oil flowing through the transfer pump, the downflow pump is used to mix the heated fuel with the fuel oil intercepted on the fuel oil suction side of the transfer pump. If the above-mentioned treatment of the outflow of the fuel oil storage tank is carried out, according to the arrangement structure of the fuel oil storage tanks of the transfer origin and the transfer destination, if the fuel oil storage tanks of the transfer origin and the transfer destination are connected in series When arranging the structure, select: The above-mentioned on-off valves and transfer pipes on the upstream and downstream sides of the downflow pump that are arranged in the suction pipe connected to the fuel oil separation tank and the fuel oil storage tank of the transfer destination The on-off valve on the upstream side of the transfer pipe is opened to transfer the heated fuel oil from the fuel oil separation tank to the fuel oil storage tank of the transfer destination. The heating-finished fuel oil transfer path is also arranged in the foregoing The upstream and downstream on-off valves on the upstream and downstream sides in the flow direction of the fuel oil generated by the delivery pump in the delivery pipe open and close the flow path to the fuel oil storage tank at the origin of the delivery. The on-off valve on the tank side of the tank is opened, and the transfer path for suction and transfer is used to replenish the fuel oil sucked by the transfer pump from the fuel oil storage tank of the transfer origin to the fuel oil separation tank.

Images