JP6689495B2 - Fuel oil delivery system - Google Patents

Description

  The present invention relates to a fuel oil delivery system using a tank lorry that determines an oil type when refueling an oil storage tank installed at a gas station and prevents oiling of a different oil type.

  When delivering fuel oil from an oil tank station to a gas station, a tank lorry partitioned into a plurality of hatches as shown in Patent Document 1 is usually used, and various fuel oils ordered from the gas station are loaded in each hatch. Then, by opening a specific bottom valve of the multiple hatches, the fuel oil of the specified oil type is unloaded through the common piping and the unloading hose connected to this and the tank of the gas station. It

When unloading is completed, after confirming that the fuel oil has risen to the top of the hatch and all of the fuel oil in the hatch has been discharged, the unloading hose is removed and the unloading work is completed.
However, since the unloading of the hatch is performed visually, it is necessary to perform work at a high place such as climbing to the upper part of the hatch, and there is a risk that workers may fall.

JP 10-324400

  The present invention has been made in view of such a problem, and its object is to easily detect that the unloading is completely performed by providing a detecting means for monitoring the state of the bottom valve of each hatch. It is to provide a fuel oil delivery system that can be used.

In order to solve such a problem, the present invention connects a plurality of hatches provided in a tank truck and an oil filling port of an underground oil storage tank with an unloading hose, and unloads fuel oil in the hatch to an underground oil storage tank. In the fuel oil distribution system, a liquid amount management means for managing the oil type and quantity for each underground oil storage tank, an on-vehicle control means for managing the oil type and quantity for each hatch, and an on-vehicle control means connected to the on-vehicle control means for each hatch. A bottom valve opening / closing sensor provided on the bottom valve, and a bottom valve liquid sensor arranged downstream of the bottom valve for each hatch, the on-vehicle control means for each hatch based on the data from the liquid amount management means. The stored fuel oil is unloaded, and the completion of the unloading is grasped by a signal from the bottom valve opening / closing sensor provided on the bottom valve and a signal from the bottom valve liquid sensor, and Signal from bottom valve fluid sensor More perform leakage management from the bottom valve.

  Safety can be improved because the end of unloading can be detected reliably on the ground without working in high places.

Configuration diagram showing the outline of the system of the present invention The figure which shows 1st Example of the bottom valve provided with the bottom valve opening / closing sensor and bottom valve liquid sensor which can be used for the system of this invention in an open state. The figure which shows the same bottom valve in a valve closed state. The figure which shows 2nd Example of a bottom valve opening / closing sensor. The figure which shows 3rd Example of a bottom valve opening / closing sensor. The figure which shows 4th Example of the bottom valve provided with the bottom valve opening / closing sensor and the bottom valve liquid sensor in the valve open state. The figure which shows the same bottom valve in a valve closed state. The figure which shows 5th Example of the bottom valve opening / closing sensor A diagram showing a sixth embodiment of the bottom valve opening / closing sensor The figure which shows the structure suitable for liquid detection by removing the bottom valve of one embodiment of the curved pipe. The figure which shows the other Example of the arrangement form of a bottom valve liquid sensor. The block diagram which shows one Example of the system of this invention. The flowchart which shows the first half operation | movement of a vehicle-mounted control apparatus and operation | movement of a liquid volume management apparatus among the systems of this invention. FIGS. 3A and 3B are flowcharts showing the operation of the bottom valve and the bottom valve opening / closing control unit in the system of the present invention. The flowchart which shows the latter half operation | movement of an in-vehicle control apparatus among the systems of this invention.

  FIG. 1 is a configuration diagram showing an embodiment of a fuel oil delivery system of the present invention. In a tank truck, a vehicle-mounted tank 2 is partitioned by a partition plate 1 into a plurality of hatches 3, and the hatch 3 is provided on a bottom wall 4. It is connected to a common pipe 7 via a bottom valve 5 and a curved pipe 6 (described later). Further, each bottom valve 5 is connected to a connection 8 having an opening / closing handle of the bottom valve 5 at one end. At the downstream end of the common pipe 7, there is provided a discharge valve 9, a sight glass S, and an unloading hose connection port 10 connected to an oil filling port of an underground oil storage tank.

The lorry is equipped with a compressor 11 for supplying air for opening and closing the bottom valve, and an in-vehicle control device 12.
The in-vehicle control device 12 includes a card reader 13 for reading and writing a card recording product information, a keyboard 14 for designating a hatch, and the like, and is configured to communicate with a liquid amount management device 15 described later.

  On the other hand, at the gas station, a liquid amount management device 15 that monitors the liquid amount of each underground oil storage tank based on the data from the liquid level gauge 17 of each underground oil storage tank 16 and that can communicate with the vehicle-mounted control device 12 is arranged.

Next, the bottom valve provided with the sensors constituting the system of the present invention will be described.
2 and 3 show a first embodiment of the bottom valve of the present invention in an open state and a closed state, in which the upper peripheral portion of the discharge port 20 formed in the bottom wall 4 of the hatch 3 is shown. A valve seat 21, a cylinder member 22 having a lower opening, a valve element 23 fixed to the lower end of the cylinder member 22 and seated on the valve seat 21 from above, and air for opening / closing operation is supplied. A hollow shaft 24 that vertically penetrates the bent pipe 6 and slides a valve body 23 integrated with the cylinder member 22 in the vertical direction, and a hollow shaft 24 that slides on the inner circumference of the cylinder member 22 and forms an air chamber 25 in the upper region of the cylinder member. And a piston 26 fixed near the upper end of the hollow shaft 24, a biasing member 27 for constantly biasing the valve body 23 in the discharge port 20, that is, a valve closing direction, and a compression coil spring in this embodiment. ing. The hollow shaft 24 has its upper end communicating with the air chamber 25. Reference numeral 28 in the drawing denotes a ring-shaped packing provided on the lower surface of the valve body 23.

  Reference numerals 30 and 31 in the figure denote positions where the proximity detection member 30 which constitutes the bottom valve opening / closing sensor for detecting the valve closed state and the valve opened state is located above the piston 26 and is in the valve closed state (state shown in FIG. 3). The detected member 31 is arranged at a position where the proximity detection member 30 is activated when the valve body 23 descends.

  It goes without saying that the proximity detecting member 30 and the detected member 31 may be arranged in the opposite manner, that is, the detected member may be arranged on the piston 26 side and the proximity detecting member 30 on the cylinder member 22 side. According to the example, the signal transmission cable 32 of the sensor 20 can be pulled out through the hollow shaft 24, and the explosion-proof structure can be easily realized. The proximity detection member 30 may be a magnet diode or a photo sensor, and the detected member 31 may be a magnetic material or a light reflection member.

  When the vehicle-mounted control device 12 issues an unloading command in the valve closed state (state shown in FIG. 3), air is supplied from the vehicle-mounted compressor 11 to the air chamber 25 of the cylinder member 22 via the hollow shaft 24, and the cylinder member 22 rises against the biasing member 27, and the valve body 23 integrated with the cylinder member 22 separates from the valve seat 21 (state shown in FIG. 2).

  Since the proximity detection member 30 is separated from the detection target member 31 in the opened state, it can be detected that the valve is opened. When the unloading is completed and the supply of air is stopped, the cylinder member 22 descends due to the elasticity of the biasing member 27 and sits on the valve seat 21 to be in the valve closed state (the state shown in FIG. 3) and the proximity detection member. The member 31 to be detected faces the member 30, and a signal is output from the proximity detecting member 30 so that the valve closing can be known.

  Although the bottom valve opening / closing sensor detects only one position in the above-described embodiment, it detects a plurality of valve openings at intervals in the vertical direction as shown in FIG. 4 as the second embodiment. By disposing the detected member 41a and the detected member 41b for detecting the valve closing, the valve body 23 is separated from the valve seat 21, the proximity detection member 40 faces the detected member 41a, and a signal is output from the proximity detection member 40. Being able to know the valve opening. Further, when the valve body 23 is seated on the valve seat 21, the sensor 40 faces the detected member 41b and a signal is output from the proximity detection member 40, so that it can be known that the valve is closed.

  Further, as a third embodiment, as shown in FIG. 5, a valve body is provided by arranging a proximity detection member 50a for detecting the valve closing and a proximity detection member 50b for detecting the valve opening at intervals in the vertical direction. 23 is separated from the valve seat 21, the proximity detection member 50b faces the detected member 51, and a signal is output from the proximity detection member 50b, so that the valve opening can be known. Further, when the valve body 23 is seated on the valve seat 21, the proximity detection member 50a faces the detected member 51, and a signal is output from the proximity detection member 50a, so that it can be known that the valve is closed. That is, if the valve body is displaced even by a small amount due to dust and the like, it is possible to grasp that the proximity detection member cannot detect the object to be detected and is not normally opened and closed.

Further, although the bottom valve opening / closing sensor is provided in the air chamber in the above-described embodiment, the fourth embodiment is provided outside the bottom valve 5 in consideration of facilitating maintenance such as sensor replacement and retrofitting of the sensor. Will be described with reference to FIGS. 6 and 7.
As shown in FIG. 6, the storage portion 38 having the detected portion 61 arranged at one end and the shaft 91 fixed to the upper portion of the air chamber 25 at the other end are inserted into the hollow shaft 24, and the air is supplied from the lower end of the hollow shaft 24. A member to be detected 61 is provided at the lower end of which the member is detected through the seal 37, and the proximity detection member 60 is arranged at a position where the valve body 23 is separated from the valve seat 21 and the member to be detected 51 faces.

  When the vehicle-mounted control device 12 issues an unloading command in the valve closed state (state shown in FIG. 7), air is supplied from the compressor 11 to the air chamber 25 of the cylinder member 22 via the hollow shaft 24, and Air is supplied to the air chamber 25, the cylinder member 22 rises against the biasing member 27, and the valve body 23 integrated with the cylinder member 22 separates from the valve seat 21 (state shown in FIG. 6).

  In the opened state, the proximity detection member 60 is separated from the detected member 31 as shown in FIG. 6, so that the opened valve can be detected. Further, when the unloading is completed and the air supply is stopped, the cylinder member 22 is lowered by the elasticity of the biasing member 27 and is seated on the valve seat 21 to be in the valve closed state (the state shown in FIG. 7) and the proximity detection. The member 60 is located inside the storage portion 38, and the detected member 61 faces it, and a signal is output from the proximity detection member 60, so that it can be known that the valve is closed.

  Further, as a modification of the above-mentioned second embodiment, a fifth embodiment will be explained based on FIG. A detected member 71a that detects opening of the valve and a detected member 71b that detects closing of the valve are arranged at intervals in the vertical direction, and the valve body 23 moves away from the valve seat 21 and the proximity detection member 70 becomes the detected member 71a. A signal is output from the proximity detection member 70 so as to face each other, and it can be known that the valve is open. Further, when the valve body 23 is seated on the valve seat 21, the sensor 70 faces the detected member 71b, and a signal is output from the sensor 70, so that it can be known that the valve is closed.

Furthermore, a sixth embodiment will be described as a modification of the third embodiment with reference to FIG.
As shown in FIG. 9, the valve element 23 is separated from the valve seat 21 by arranging the proximity detection member 80a for detecting the valve closing and the proximity detection member 80b for detecting the valve opening with the sensor vertically spaced from each other. The proximity detection member 80b faces the detection target member 81, and a signal is output from the proximity detection member 80b, so that the valve opening can be known. Further, when the valve body 23 is seated on the valve seat 21, the proximity detection member 80a faces the detected member 81, and a signal is output from the proximity detection member 80a, so that it can be known that the valve is closed.

FIG. 10 shows an embodiment of the curved pipe 6. In this embodiment, a circulating gutter 33 is formed in the vicinity of the discharge port 21 of the curved pipe 6, a notch 33a is provided in a part thereof, and a bottom valve is provided in the lower portion thereof. A liquid sensor 34 is arranged. The gutter 33 is inclined so that the cutout 33a is located at the bottom.
Further, a concave portion is formed on the bottom surface of the curved pipe 6 to provide a gutter 35, and a bottom valve liquid sensor similar to a bottom valve liquid sensor 36 of FIG. 11 described later is also arranged in this gutter 35.

  According to this embodiment, when the bottom valve is incompletely closed and liquid is leaking, even if the leak amount is small, it is collected by the gutters 33 and 34 and flows toward the two bottom valve liquid sensors. The liquid can be detected reliably.

  Not only that, the aspect of the vortex U (see FIG. 2) of the liquid flowing down the discharge port 11 changes depending on the flow velocity, so that the output of the bottom valve liquid sensor changes. Therefore, it becomes possible to monitor the discharge status of fuel oil during unloading.

  Further, a concave portion is formed on the bottom surface of the curved pipe 6 to provide a gutter 35, and a bottom valve liquid sensor 36 is also arranged in the gutter 35 as shown in FIG. 11 to detect the residual liquid in the flow path. You can also

Next, one embodiment of the system will be described with reference to FIG.
The liquid quantity management device 15 receives the data from the liquid level gauge 17 of each underground oil storage tank and converts it into a liquid quantity, and a liquid quantity storage means for storing the liquid quantity of each underground oil storage tank. 15b, an underground tank information storage means 15c for storing information regarding each underground oil storage tank, and an input / output means 15d for communicating with the vehicle-mounted control device 12.

  On the other hand, the in-vehicle control device 12 reads a card in which signals from the bottom valve opening / closing sensor 30 and the bottom valve liquid sensor 34 and the gas station information such as the name of the gas station requiring delivery, the oil type name, and the hatch oil storage amount are read. The unloading availability determination means 12b, which determines whether or not the bottom valve 5 can be opened and closed, and outputs a signal to the bottom valve opening / closing control means 12a, based on the information from the keyboard 14 and the command from the keyboard 14, It is provided with a loading data storage means 12c for storing loading data such as liquid volume, and an input / output means 12d for communicating with a liquid volume management device.

Next, the operation of the system configured as described above will be described based on the flowcharts shown in FIGS.
The tank lorry that has completed the predetermined loading at the oil tank place prepares for communication between the vehicle-mounted control device 12 and the liquid amount management device 15, and unloads the hose connection port 18 and the tank lorry of the underground oil storage tank 16 that requires lubrication. The hose connection port 10 is unloaded and connected with the hose 19.

  When unloading is instructed from the vehicle-mounted control device 12 when preparation is completed (step 1 in FIG. 13), the vehicle-mounted control device 12 outputs a gas station information acquisition command to the liquid volume management device 15 at the gas station (step 2). In the case of loading (step 3), the unloading mode is stopped.

  When the liquid quantity management device 15 receives the gas station information acquisition command (step 4), it outputs the liquid amount and oil type of each underground oil storage tank 16 to the vehicle-mounted control device 12 (step 5). When the vehicle-mounted control device 12 receives the gas station information (step 6), it waits for the hatch number designation from the keyboard 14 (step 7), and when the hatch number is designated, determines whether or not the cargo can be unloaded (step 8).

That is,
(1) Judgment of whether or not the gas station is to be unloaded,
(2) Consistency between the type of oil in the designated hatch and the type of fuel oil in the underground oil storage tank to be unloaded,
(3) Judgment as to whether or not the underground oil storage tank for unloading the amount of fuel oil in the hatch can be received,
Is.

If these three conditions are not satisfied, it is notified that unloading is not possible (step 9).
On the other hand, if all of the above conditions are satisfied, it is notified that unloading is possible (step 10), and a command is issued to receive signals from all bottom valve opening / closing sensors 30 (step 11).

  When the vehicle-mounted control device 12 receives the command (step 12 in FIG. 14A), all the bottom valve opening / closing sensors 30 output the state (step 13), and the valve closing function of the bottom valve 5 is performed before unloading. Check if is complete.

  When the vehicle-mounted control device 12 receives an open signal from even one bottom valve sensor (step 14 in FIG. 13), it notifies that the bottom valve 5 is open (step 15) and stops the confirmation operation of the bottom valve 5. . That is, since fuel oil is accumulated in the common pipe 7, there is a risk of mixing oil.

  When the closing of the valve can be confirmed by the signals of all the bottom valve opening / closing sensors 30 (step 16), the bottom valve liquid sensor 34 is instructed to output a signal indicating the presence or absence of liquid (step 17). When the bottom valve liquid sensor 34 receives an output command of a signal indicating the presence or absence of liquid (step 18 in FIG. 14A), the bottom valve liquid sensor 34 outputs a signal indicating the presence or absence of liquid (step 19).

  When the liquid-free state cannot be confirmed from the signal from the bottom valve liquid sensor 34 (step 20 in FIG. 13), there is a possibility that oil may be mixed as well, so a notification is given (step 21) and the unloading is stopped. As a result, it is possible to reliably detect a liquid leak due to a slight valve opening that cannot be detected by the bottom valve opening / closing sensor 30.

  When it is confirmed that there is no residual oil due to liquid leakage in the common pipe 7 (step 22), a signal for instructing the bottom valve 5 of the hatch 3 to be unloaded to supply air for valve opening operation is opened and closed. It is output to the control unit 12a (step 23).

  When the bottom valve opening / closing control unit 12a receives the air supply command signal (step 24 in FIG. 14B), it supplies air to the target bottom valve 5 (step 25). Upon receiving a signal indicating that the bottom valve opening / closing sensor 30 of the corresponding bottom valve 5 has opened (step 26 in FIG. 13), the vehicle-mounted control device 12 recognizes that the corresponding bottom valve 5 has opened (step 27). .

  At the same time, it is monitored whether or not a valve opening signal is output from the bottom valve opening / closing sensor 30 of the other bottom valve 5 (step 28). If no valve closing signals are output from the bottom valve opening / closing sensors 30 of all bottom valves 5 other than the unloading target, the bottom valve 5 other than the target may open during the unloading from the target hatch and there is a risk of mixed oil. Therefore, it informs that the bottom valve 5 is abnormal (step 29) and closes all the bottom valves 5 (step 30) to stop the unloading work.

  On the other hand, when the bottom valve opening / closing sensors 30 of all the bottom valves 5 other than the unloading target are outputting the valve closing signals, the bottom liquid sensor 34 of the bottom valve 5 of the hatch to be unloading outputs the no liquid signal. It is monitored whether it is outputting (step 31 in FIG. 15). In this state, even though the bottom valve 5 is open, the bottom valve liquid sensor 34 detects that there is no liquid, so that all the fuel oil in the hatch 3 to be unloaded is unloaded in the underground oil storage tank 16. You can judge that

  When the absence of liquid is detected in the above-described process, it is determined that the unloading of the hatch is completed, and the display of the vehicle-mounted control device 12 or the voice alarm notifies the end of the unloading (step 32). When a certain period of time has elapsed after the notification, that is, when the fuel oil in the common pipe 7 and the unloading hose 19 is completely discharged to the underground oil storage tank (step 33), the air is supplied to the bottom valve 5. A signal to stop is output (step 34). When a signal for stopping the air supply to the bottom valve 5 is received (step 35 in FIG. 14 (B)). The bottom valve opening / closing control means 12a stops the air supply to the bottom valve 5 and closes the bottom valve 5 (step 36).

  Waiting for a valve closing signal to be input from the bottom valve opening / closing sensor 30 of the corresponding bottom valve 5 (step 37 in FIG. 15), the valve closing can be recognized by the signal from the bottom valve opening / closing sensor 30 of the bottom valve 5 (step 38). ), Visually confirming that there is no residual oil through the sight glass S, and remove the unloading hose 19. Furthermore, after notifying the completion of the unloading of the hatch (step 34), it is judged whether or not there is a subsequent unloading operation (step 39), and if it exists, the step 7 (FIG. 13) and subsequent steps are performed again. The operation is repeated, and if there is no subsequent unloading, the end of unloading is displayed (step 40) and all the operations are stopped.

1 Partition Plate 2 In-Vehicle Oil Storage Tank 3 Hatch 5 Bottom Valve 12 In-Vehicle Control Device 15 Liquid Volume Management Device 30, Bottom Valve Open / Close Sensor 34, 36 Bottom Valve Liquid Sensor

Claims (1)

In a fuel oil delivery system that connects a plurality of hatches provided in the tank truck and an oil filling port of the underground oil storage tank with an unloading hose and unloads the fuel oil in the hatch to the underground oil storage tank,
Liquid amount management means for managing the oil type and amount for each underground oil storage tank, vehicle-mounted control means for managing the oil type and amount for each hatch, and a bottom provided on the bottom valve for each hatch connected to the vehicle-mounted control means A valve opening / closing sensor, and a bottom valve liquid sensor arranged downstream of the bottom valve for each hatch,
The vehicle-mounted control means unloads the fuel oil stored in each hatch based on the data from the liquid amount management means, and the bottom valve opening / closing sensor provided on the bottom valve when the unloading is completed. And a signal from the bottom valve liquid sensor, and manages liquid leakage from the bottom valve based on a signal from the bottom valve liquid sensor.

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