JPH0710199A - Oil feeder - Google Patents

Abstract

PURPOSE:To use a pump and a flow meter both for an oil feed pipeline and a supply pipeline and easily check an amount of fed oil and an amount of oil remaining in an oil storage tank, by connecting one end of the share or supply pipeline to the first oil-feed pipeline and the other end to the second oil-feed or supply pipeline by means of the changeover of first and second switch valves. CONSTITUTION:One ends of share-pipelines 4A-4C are connected to first oil-feed pipelines 2A-2C and first supply pipelines 9A-9C by means of first switch valves 3A-3C so that they can be switched. Additionally, the other ends of the share- pipelines 4A-4C are connected to second supply pipelines 10A-10C by means of second switch valves 5A-5C so that they can be switched. Therefore, the share-pipelines 4A-4C can be used both in the feed of oil A-C in oil storage tanks 1A-1C from oil feed nozzles 7A-7C and the supply of oil A-C in oil tanks 8A-8C to the oil storage tanks 1A-1C. Also, because pumps 11A-11C and flow meters 12A-12C are provided in the particular parts of the share-pipelines 4A-4C, between both their ends, they can be used both for feeding the oils A-C and supplying them.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil supply device preferably used as, for example, a vehicle oil supply meter, an oil exchanger, a lorry vehicle, or the like.

[0002]

2. Description of the Related Art Generally, an oil supply pipe having one end connected to an oil storage tank for storing oil liquid and the other end connected to an oil liquid discharge port, and a pump and a flow meter provided in the middle of the oil supply pipe are provided. The provided refueling device is, for example, a vehicle refueling weighing machine,
It is widely applied to oil changers or trucks.

A vehicle refueling meter according to this type of prior art stores an oil liquid (including regular gasoline, high-octane gasoline or light oil, for example) in a storage tank such as a stock tank or a drum, and stores the oil when refueling. The amount of oil such as gasoline in the tank is supplied from the refueling nozzle to the refueling target (for example, the fuel tank of the vehicle) while measuring the amount of refueling through the pump and the flow meter, and the remaining amount of oil in the oil storage tank. When the amount becomes low, the oil liquid is replenished into the oil storage tank from an external oil tank or the like.

Further, the oil changer includes engine oil,
Equipped with an oil storage tank that stores oil liquid such as cleaning oil and a waste oil tank that temporarily stores waste oil.When exchanging engine oil, first use the waste oil nozzle to recover the waste engine oil from the engine oil pan. After that, the unused engine oil (new oil) in the oil storage tank is supplied from the new oil nozzle into the oil pan of the engine to be supplied while measuring the amount of oil supplied through the pump and the flow meter.

If necessary, cleaning oil is supplied to the oil pan after collecting the waste oil to clean the oil pan, and engine oil as new oil is supplied to the oil pan after cleaning. ing.

As described above, even in the oil exchanger, since the oil liquid is supplied from the oil storage tank to the object to be refueled, when the remaining amount of the engine oil or the cleaning oil in the oil storage tank becomes small, the oil tank is supplied from the external oil tank or the like. It is necessary to replenish the oil liquid in the oil storage tank.

[0007] Further, the Lori vehicle is replenished from an oil tank or the like outside the vehicle, and oil liquid such as kerosene stored in an on-vehicle oil storage tank is measured at the time of refueling while measuring the amount of refueling through a pump and a flow meter, and a refueling nozzle Is supplied to the kerosene tank and the like that are subject to refueling.

Also, even in a lorry vehicle, since the oil liquid is supplied from the oil storage tank to the refueling object, when the remaining amount of the oil liquid in the oil storage tank becomes small, the oil liquid is replenished from the external oil tank or the like into the oil storage tank. There is a need to.

In the oil supply device as described above, one end of the oil supply pipe is connected to the oil storage tank, and the other end of the oil supply pipe is connected to an oil supply nozzle serving as a discharge port. A pump and a flow meter are provided, and the amount of refueling of oil liquid such as gasoline, which is refueled from the refueling nozzle by driving the pump, is measured by the flow meter.

Further, when the remaining amount of the oil liquid in the oil storage tank becomes low, it is necessary to replenish the oil liquid from the external oil tank into the oil storage tank. Therefore, a replenishment pipe is provided between the external oil tank and the oil storage tank. Connected, a pump etc. is provided in the middle of the replenishment pipe, a liquid level sensor etc. for detecting the liquid level of the oil liquid is provided in the oil storage tank, and the oil liquid is supplied from the oil tank to the oil storage tank by driving the pump. In addition to making it possible, the liquid level sensor detects the remaining amount of oil liquid stored in the oil storage tank,
The amount of oil remaining in the oil storage tank can be checked.

Furthermore, instead of providing the liquid level sensor in the oil storage tank in the above-described oil supply device, a separate flow meter is provided in the middle of the replenishment pipe to measure the amount of replenishment of the oil liquid. There are some that can check the remaining amount of oil in the oil storage tank.

[0012]

By the way, in the vehicle refueling meter as the refueling device according to the above-mentioned prior art,
A pump in the middle of the oil supply pipe that supplies oil such as gasoline,
Since a flow meter is installed and another pump is installed in the middle of the replenishment pipe for replenishing the oil liquid from the external oil tank to the oil storage tank, a pump for pumping the oil liquid is provided for each pipe. It is necessary not only to increase the number of pumps used, but also to install a liquid level sensor to check the remaining amount of oil in the oil storage tank, which complicates the overall structure and improves workability during assembly. There is a problem that maintainability deteriorates.

Further, even in the oil exchanger and the lorry vehicle according to the prior art, when the remaining amount in the oil storage tank becomes low, an external oil tank or the like is used to replenish the oil liquid into the oil storage tank from the outside. A replenishment pipe is connected between the oil tank and the oil storage tank, a pump or the like is provided in the middle of the replenishment pipe, and a liquid level sensor or the like is provided to confirm the remaining amount of the oil liquid in the oil storage tank. , Has the same problem as the vehicle refueling weighing machine.

Further, when two flow meters are used and the amount of remaining oil liquid is checked from the oil supply amount and the replenishment amount, an error occurs between the oil supply amount and the replenishment amount due to a measurement error of the two flow meters. In some cases, the amount of remaining oil liquid in the oil storage tank becomes inaccurate.

The present invention has been made in view of the above-mentioned problems of the prior art. The present invention allows the oil supply pipe and the replenishment pipe to both serve as a pump and a flow meter, so that the amount of oil supply and the remaining amount in the oil storage tank can be simplified. It is an object of the present invention to provide an oil supply device which can be confirmed and can surely reduce the number of parts such as a pump, and can greatly improve workability and maintenance during assembly.

[0016]

In order to solve the above-mentioned problems, the present invention provides a first oil supply pipe having one end connected to an oil storage tank for storing oil liquid and the other end connected to a first switching valve. And a dual-purpose pipe whose one end side is connected to the first oil supply pipe via a first switching valve and the other end side is connected to a second switching valve, and one end side is connected to the dual-use pipe by a second switching valve. A second oil supply pipe connected via an oil liquid discharge port and the other end side connected to an oil tank for replenishing the oil storage tank with oil liquid from the outside, and the other end side connected to the first oil supply line. First replenishment pipe connected to the dual-use pipe via the switching valve, and a second replenishment whose one end side is connected to the dual-use pipe via the second switching valve and the other end side is connected to the oil storage tank. Plumbing,
A pump and a flow meter provided in the middle of the combined pipe are provided, and one end side of the combined pipe is selectively switched and connected to the first oil supply pipe and the first supply pipe by the first switching valve. The second switching valve is used to selectively switch the other end of the dual-purpose pipe to the second oil supply pipe and the second replenishment pipe.

[0017]

With the above structure, if the first and second switching valves are switched to connect one end of the combined pipe to the first oil supply pipe and connect the other end of the combined pipe to the second oil supply pipe, By driving the pump provided in the middle of the dual-purpose pipe, the oil liquid in the oil storage tank can be easily refilled from the discharge port to the refueling target,
The amount of oil supplied at this time can be easily measured with a flow meter provided in the middle of the dual-purpose pipe.

If the first and second switching valves are switched to connect one end of the combined pipe to the first supply pipe and connect the other end of the combined pipe to the second supply pipe, the combined pipe By driving the pump provided in the middle of the oil tank, you can easily replenish the oil liquid from the external oil tank into the oil storage tank, and easily measure the replenishment amount of the oil liquid at this time with the flow meter provided in the middle of the dual-purpose pipe. it can.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 6 by taking a vehicle oil supply measuring machine as an example of an oil supply device.

In the figure, reference numerals 1A, 1B and 1C denote oil storage tanks, and the oil storage tanks 1A, 1B and 1C are installed in a casing (not shown) movably or fixedly installed in, for example, a gas station. By stockpiling tanks, drums,
It has a tank capacity Q. Then, oil liquids A, B and C of different liquid types are stored in the oil storage tanks 1A, 1B and 1C, for example, oil liquid A is regular gasoline, oil liquid B is high-octane gasoline, and oil liquid C is from light oil. Has become.

One end side of 2A, 2B and 2C is an oil storage tank 1
First oil supply pipes 3A, 3 connected to A, 1B, 1C
Reference characters B and 3C denote first switching valves connected to the other ends of the oil supply pipes 2A, 2B and 2C, and the switching valves 3A, 3B and 3C.
Is composed of an electromagnetic type three-way switching valve and has two inflow ports and one outflow port. And the switching valve 3
One of the inlets of A, 3B and 3C has oil supply pipes 2A, 2B,
The other inflow port is connected to the other end side of 2C and the other inflow port is connected to replenishment pipes 9A, 9B and 9C described later, and the outflow port is connected to dual purpose pipes 4A, 4B and 4C described later.

Here, the switching valves 3A, 3B, 3C are controlled to be switched by a switching signal from a control device 17, which will be described later. For example, the switching valve 3A is one of the oil supply pipe 2A on the inlet side and the replenishment pipe 9A. Piping 4A which selectively uses one
Switch connection to. Similarly, for the switching valve 3B (3C), either one of the inlet-side oil supply pipe 3B (3C) and the replenishment pipe 9B (9C) is selectively switched to the dual-use pipe 4B (4C). Connecting.

One end side of 4A, 4B and 4C is a dual purpose pipe connected to the first oil supply pipes 2A, 2B and 2C through the first switching valves 3A, 3B and 3C, and 5A, 5B and 5C are the dual use pipes. 4A, 4B, 4C shows a second switching valve connected to the other end side, and the switching valves 5A, 5B, 5C are constituted by electromagnetic three-way switching valves, and have one inlet and two flow valves. And an outlet. The switching valves 5A, 5B, 5C are connected at their inlets to the other ends of the dual-purpose pipes 4A, 4B, 4C,
One of the outlets is one of the oil supply pipes 6A, 6B, 6C described later.
Is connected to the other side, and the other side is the supply pipes 10A, 10B, 1 described later.
It is connected to 0C.

Here, the switching valves 5A, 5B, 5C are switched and controlled by a switching signal from the control device 17, and for example, the switching valve 5A has a dual pipe 4A on the inlet side, an oil supply pipe 6A on the outlet side, and a replenishment pipe. 10A is selectively switched and connected to either one. Similarly, for the switching valve 5B (5C), the dual pipe 4B (4C) on the inlet side is replaced with the oil supply pipe 6B (6C) on the outlet side and the replenishment pipe 10B (10).
One of C) is selectively switched and connected.

One end side of 6A, 6B, and 6C is a dual-purpose pipe 4
A second oil supply pipe connected to A, 4B, 4C via second switching valves 5A, 5B, 5C is shown, and the oil supply pipe 6A,
6B and 6C are refueling nozzles 7 with the other end serving as an oil liquid discharge port
It is connected to A, 7B, and 7C. The refueling nozzle 7A refuels the vehicle as the refueling object with the oil liquid A (eg, regular gasoline) in the reserving tank 1A, and the refueling nozzle 7B supplies the vehicle as another refueling object with the reserving tank 1A.
The oil liquid B in B (for example, high-octane gasoline) is refueled.
The refueling nozzle 7C refuels the vehicle as another refueling target with the oil liquid C (for example, light oil) in the oil storage tank 1C.

8A, 8B and 8C are oil storage tanks 1A and 1
The oil tanks for replenishing the oil liquids A, B, and C with B and 1C are shown, and the oil tanks 8A, 8B, and 8C are tank trucks 8 for transporting the oil liquids A, B, and C from a refinery to a gas filling station, for example. The respective oil tanks 8A, 8B, and 8C store oil liquids A, B, and C, respectively.

9A, 9B and 9C are oil storage tanks 1A and 1
A first replenishment pipe for replenishing the oil liquids A, B, C from the outside is shown in B, 1C. One end side of the replenishment pipes 9A, 9B, 9C is connected to the oil tanks 8A, 8B, 8C, and the other end is shown. The side is the dual-purpose pipe 4 via the first switching valve 3A, 3B, 3C.
It is designed to be connected to A, 4B and 4C.

Reference numerals 10A, 10B and 10C indicate second supply pipes, and one end side of the supply pipes 10A, 10B and 10C is also used as the second pipe 4 through the second switching valves 5A, 5B and 5C.
A, 4B, 4C, the other end side is the oil storage tank 1A,
1B, 1C connected to the oil storage tanks 1A, 1B, 1C
Oil liquids A, B, and C are replenished therein.

11A, 11B and 11C are dual-purpose pipes 4A,
Pumps provided in the middle of 4B and 4C are shown. Each of the pumps 11A, 11B and 11C has a motor (not shown) as a drive source, and is driven and stopped by a control signal from the control device 17. Then, the pumps 11A and 11
B and 11C are for supplying and supplying the oil liquids A, B and C from one end side to the other end side of the dual-purpose pipes 4A, 4B and 4C, respectively, at the time of supplying and replenishing the oil liquids A, B and C. Is. Further, the pumps 11A, 11B, 11C are each provided with a relief valve (not shown), and for example, the oil supply nozzles 7A, 7
When excessive pressure exceeding the relief set pressure is generated by driving the pumps 11A, 11B, 11C when the valves B, 7C are closed, etc., the relief valve is opened so that the pump 1
Oil liquids A, B and C are circulated before and after 1A, 11B and 11C.

Reference numerals 12A, 12B and 12C denote flow meters,
The flowmeters 12A, 12B, 12C are pumps 11A, 11
B, 11C and the second switching valves 5A, 5B, 5C are provided in the middle of the dual-purpose pipes 4A, 4B, 4C, respectively. Then, the flow meters 12A, 12B, 12C
Is the flow rate of the oil liquids A, B, and C that are pumped and supplied from one end side to the other end side of the dual-purpose pipes 4A, 4B, and 4C by the pumps 11A, 11B, and 11C, respectively. It is something to measure.

Next, reference numeral 13 in FIG. 2 denotes a preset switch, and the preset switch 13 is the refueling nozzle 7A,
When refueling the oil liquids A, B and C using 7B and 7C,
Alternatively, when replenishing the oil storage tanks 1A, 1B, 1C using the replenishment pipes 9A, 9B, 9C, the desired refueling amount or replenishment amount is set to the designated refueling amount Qks such as "20 l (liter)" or It is set as the designated supply amount Qhs.

Further, the preset switch 13 can set the capacity when the oil tank 1A, 1B, 1C is "full" as the tank capacity Q in addition to the specified oil supply amount Qks and the specified replenishment amount Qhs by the specified operation. Is.

Reference numeral 14 denotes a keyboard, and the keyboard 1
4 is the refueling operation procedure shown in FIG.
This is set as "1-2" or "1-3", and the supply operation procedure shown in FIG. 4 is set as "2-1", "2-2" or "2-3". When the operator makes the setting "1-1" using the keyboard 14, the first oil supply pipe 2A is connected to the first switching valve 3A.
Is connected to the dual-purpose pipe 4A via the second switching valve 5A, and the dual-purpose pipe 4A is connected via the second switching valve 5A.
Switched to A. In addition, the operator uses the keyboard 1
4 is set to "1-2" (or "1-3"), the oil supply pipe 2B (2C) is connected to the switching valve 3B (3).
The dual-use pipe 4B (4C) is switched and connected via C), and the dual-use pipe 4B (4C) is switched and connected to the oil supply pipe 6B (6C) through the switching valve 5B (5C).

On the other hand, when the operator uses the keyboard to set the replenishment operation procedure "2-1", "2-2" or "2-3", the first replenishment pipe 9A, 9B or 9C switches the switching valve. 3A, 3B or 3C is connected to the dual-purpose pipe 4A, 4B or 4C by switching, and the dual-purpose pipe 4A, 4B or 4C is connected via the switching valve 5A, 5B or 5C to the second supply pipe 10A, 10B or 10
It is switched and connected to C, whereby oil tanks 8A, 8B or 8
C is in communication with the oil storage tank 1A, 1B or 1C.

Reference numeral 15 denotes an emergency stop switch. The emergency stop switch 15 is an operator, for example, when the remaining amount in the oil tank 8A, 8B or 8C becomes zero during the replenishment of the oil liquid A, B or C. Manually operated by the pump 1
It is an emergency stop of 1A, 11B or 11C.

Reference numerals 16A, 16B and 16C denote nozzle switches attached to the fueling nozzles 7A, 7B and 7C, respectively. The nozzle switches 16A, 16B and 16C are respectively connected to the fueling nozzles 7A, 7B and 7C (not shown). ) Is detected and the detection signal at this time is output to the control device 17. Then, the refueling nozzle 7A,
When 7B and 7C are removed from the nozzle hook, the pumps 11A, 11B and 11C are automatically driven based on a signal from the control device 17.

Reference numeral 17 denotes a control device composed of a microcomputer or the like, and the control device 17 has a preset switch 13, a keyboard 14,
Emergency stop switch 15, nozzle switches 16A, 16
B, 16C and flowmeters 12A, 12B, 12C, etc., and output side pumps 11A, 11B, 11C, first
Switching valves 3A, 3B, 3C, second switching valves 5A, 5B,
5C and the display 18 and the like, and the display 18 displays the oil supply amount of the oil liquids A, B, and C. The control device 17 stores the programs and the like shown in FIGS. 5 and 6 in its storage circuit and performs refueling control processing and replenishment control processing.

In the memory circuit of the control device 17, the refueling operation procedure shown in FIG.
-1 ”,“ 1-2 ”or“ 1-3 ”and the refueling operation procedure shown in FIG.
The replenishment procedure map 20 set as "1", "2-2", or "2-3" is stored. Here, the operator can use the keyboard 14 to select "1-
By setting "1", "1-2" or "1-3", a control signal corresponding to this is output from the control device 17, and the first switching valves 3A, 3B, 3C and the second switching valves are switched. The valves 5A, 5B and 5C are controlled to be switched to the oil supply side, respectively, and the pumps 11A, 11B and 11C are drive-controlled.

On the other hand, in the replenishment procedure map 20, the operator uses the keyboard 14 to select "2-1", "2-2" or "2-".
3 ", the control signal corresponding to this is output from the control device 17, and the switching valves 3A, 3B, 3
C and the switching valves 5A, 5B, 5C are switched to the replenishing side, and the pumps 11A, 11B, 11C are drive-controlled. Further, in the storage area 17, the remaining amount Q0 of the oil liquids A, B, C stored in the oil storage tanks 1A, 1B, 1C.
Etc. are stored so that they can be updated.

The vehicular refueling meter according to the present embodiment has the above-mentioned configuration. Next, the refueling control process and the replenishment control process by the control device 17 will be described with reference to FIGS. 5 and 6.

That is, in the refueling control process shown in FIG. 5, first, in step 1, when the operator sets the refueling operation procedure to "1-1" using the keyboard 14 to refuel the oil A, for example, The oil supply pipe 2A is switch-connected to the dual-use pipe 4A via the first switching valve 3A, and the dual-use pipe 4A is connected to the second oil-supply pipe 6A via the second switching valve 5A to connect the oil storage tank 1A. Switch valve 3A, pump 1
1A, a flow meter 12A and a switching valve 5A are connected to the oil supply nozzle 7A.

Then, in Step 2, the remaining amount Q0 of the oil liquid A stored in the oil storage tank 1A is read out, and in Step 3
Then, the pump 11A is driven. As a result, the oil liquid A (for example, regular gasoline) in the oil storage tank 1A is pressure-fed and supplied to the refueling nozzle 7A via the refueling pipes 2A and 6A, and the oil liquid A is supplied from the refueling nozzle 7A to the vehicle as the refueling target. Refueling is started.

Next, at step 4, the amount of oil supply Qk is read from the flow meter 12A, and at step 5, this amount of oil supply Qk is read.
However, for example, it is determined whether or not the designated refueling amount Qks set by the preset switch 13 or the like has been reached. Therefore, the process returns to step 3 and the subsequent processes are repeated.

When it is determined to be "YES" in step 5, the amount of oil supply Qk detected by the flow meter 12A is the amount of oil supply corresponding to the specified amount of oil supply Qks, so the oil liquid A from the oil supply nozzle 7A is supplied. In order to stop the refueling of the pump, the process proceeds to step 6 and the pump 11A is stopped.

Next, in step 7,

[0046]

[Equation 1] Q0 ← (Q0-Qk) is calculated, and the refueling amount Qk of this time is calculated as the remaining amount Q0 of the previous time.
The oil liquid A currently stored in the oil storage tank 1A is subtracted from (the remaining amount Q0 read in step 2).
The remaining amount Q0 is calculated, the remaining amount Q0 is stored in the storage area 17A in step 8 so that it can be updated instead of the previous remaining amount Q0, and the processing operation is ended.

When the operator sets the refueling operation procedure to "1-2" using the keyboard 14 in step 1, the first refueling piping 2B is set to the first refueling piping 2B based on the refueling procedure map 19 shown in FIG. The dual-purpose pipe 4B is switched to and connected to the dual-purpose pipe 4B via the first switching valve 3B.
The oil storage tank 1B is connected to the oil supply nozzle 7B via the switching valve 3B, the pump 11B, the flow meter 12B and the switching valve 5B.

When the refueling operation procedure is set to "1-3", based on the refueling procedure map 19, the first refueling pipe 2C is switch-connected to the dual-use pipe 4C via the first switching valve 3C. And the dual-purpose pipe 4C is connected to the second switching valve 5
It is switch-connected to the second oil supply pipe 6C via C, and the oil storage tank 1C is communicated with the oil supply nozzle 7C via the switch valve 3C, the pump 11C, the flow meter 12C and the switch valve 5C.
Also in this case, similarly, the remaining amount Q0 of the oil liquids B and C in the oil storage tanks 1B and 1C is calculated based on the equation 1 and stored in the storage area 17A in place of the previous remaining amount Q0. It

Next, in the replenishment control process shown in FIG. 6, first, in step 11, when the operator sets the replenishing operation procedure to "2-1" by the keyboard 14 to replenish the oil A, for example, The supply pipe 9A is switched and connected to the combined pipe 4A via the first switching valve 3A, and the combined pipe 4A is connected to the second supply pipe 10 via the second switching valve 5A.
Switching connection to A, oil tank 8A switching valve 3A, pump 11
A is connected to the oil storage tank 1A via A, the flow meter 12A, and the switching valve 5A.

Then, in step 12, the remaining amount Q0 of the oil liquid A stored in the oil storage tank 1A is read out, and the process proceeds to step 13 to drive the pump 11A. As a result, the oil liquid A in the oil tank 8A is pressure-fed and supplied into the oil storage tank 1A via the supply pipes 9A, 10A, etc., and the supply of the oil liquid A into the oil storage tank 1A is started.

Next, in step 14, the replenishment amount Qh of the oil liquid A is read from the flowmeter 12A, and the process proceeds to step 15.

[0052]

[Formula 2] Q0 ′ ← (Q0 + Qh) is calculated, and the current replenishment amount Qh is calculated as the previous remaining amount Q0.
By adding to (the remaining amount Q0 read in step 12), the oil liquid A currently stored in the oil storage tank 1A.
The present remaining amount Q0 'is calculated.

Next, at step 16, it is determined whether the oil liquid A stored in the oil storage tank 1A is in a "full tank" state, for example, based on the present remaining amount Q0 'calculated by the equation (2). That is, when the current remaining amount Q0 'and the tank capacity Q are equal (or when the preset supply amount Qhs required by the preset switch 13 is set at the time of supplementation, the supplementary designated amount Qhs and the supplement amount Qh are set. It is determined whether or not and are equal. As a result, "YE
When it is determined to be “S”, the oil liquid A is stored in the oil storage tank 1A,
For example, since it is being replenished until it becomes "full",
Moving to step 17, the pump 11A is stopped and the oil tank 8
The supply of the oil liquid A from A to the oil storage tank 1A is stopped.
Then, in step 18, the current remaining amount Q0 'of the oil liquid A currently stored in the oil storage tank 1A is stored in the storage area 17
The remaining amount Q0 is updated and stored in A, and the processing operation ends.

If "NO" is determined in step 16, it is determined whether or not the emergency stop switch 15 has been operated in step 19, and if "NO" is determined, the process returns to step 13 and is executed. The subsequent processing is repeated.

When it is determined to be "YES" in step 19, when the operator manually operates the emergency stop switch 15 because the oil liquid A in the oil tank 8A is exhausted during the replenishment of the oil liquid A, for example. Therefore, the process proceeds to step 17 and the pump 11A is stopped urgently, and step 1
In 8, the current remaining amount Q0 'of the oil liquid A stored in the oil storage tank 1A at this time is updated and stored in the storage area 17A in place of the previous remaining amount Q0, and the processing operation is ended.

Here, the "full tank" state is the state where the current remaining amount Q0 'and the tank capacity Q are equal. However, the "full tank" state is not limited to this, and the remaining tank capacity Q can be changed in advance. An amount obtained by subtracting Q0 may be calculated as the replenishment required amount Qn, and when the replenishment required amount Qn and the replenishment amount Qh are equal, it may be determined as a "full tank" state.

On the other hand, when the operator sets the replenishment operation procedure to "2-2" using the keyboard 14 in step 11, the first replenishment pipe 9B is set to the first replenishment piping 9B based on the replenishment procedure map 20 shown in FIG. 1 is connected to the dual-purpose pipe 4B via the switching valve 3B, the dual-purpose pipe 4B is connected via the second switching valve 5B to the second supply pipe 10B, and the oil tank 8B is connected to the switching valve 3B. It communicates with the oil storage tank 1B via the pump 11B, the flow meter 12B, and the switching valve 5B.

When the replenishment operation procedure is set to "2-3", the first replenishment pipe 9C is switched and connected to the dual-use pipe 4C through the first switching valve 3C based on the replenishment procedure map 20. And the dual-purpose pipe 4C is connected to the second switching valve 5
The oil tank 8C is switch-connected to the second supply pipe 10C via C, and the oil tank 8C is connected to the oil storage tank 1C via the switch valve 3C, the pump 11C, the flow meter 12C and the switch valve 5C. Also in this case, the present remaining amount Q0 'of the oil liquids B and C in the oil storage tanks 1B and 1C is calculated based on the equation 2 and the present remaining amount Q0' is stored in the storage area 17A. The remaining amount is updated and stored in place of Q0.

Thus, according to the present embodiment, the first switching valves 3A, 3B, 3C are used to connect one end side of the dual-purpose pipes 4A, 4B, 4C to the first oil supply pipes 2A, 2B, 2C. While selectively switching connection to the supply pipes 9A, 9B, 9C,
The second switching valves 5A, 5B, 5C are used for the dual-purpose pipes 4A, 4
Since the other ends of B and 4C are selectively switched and connected to the second oil supply pipes 6A, 6B and 6C and the second supply pipes 10A, 10B and 10C, the oil storage tanks 1A, 1B and 1
When the oil liquids A, B, C in C are supplied from the oil supply nozzles 7A, 7B, 7C and the oil liquids A in the oil tanks 8A, 8B, 8C,
The pipes 4A, 4B and 4C which are also used for replenishing B and C into the oil storage tanks 1A, 1B and 1C can be utilized respectively, and the total number of pipes can be surely reduced.

Further, the pumps 11A, 11B, 11C and the flow meter 12 are provided in the middle of the dual-use pipes 4A, 4B, 4C, respectively.
Since A, 12B, and 12C are provided, oil liquids A, B, and
The pumps 11A, 11B and 11C can be used both for refueling and replenishing C, and at the same time, the refueling amount Q of the oil liquids A, B and C
k and the replenishment amount Qh can be measured by the flowmeters 12A, 12B, 12C, and the oil liquids A, B in the oil storage tanks 1A, 1B, 1C are calculated by the equations 1 and 2 based on the measurement results.
It is possible to easily check the remaining amount Q0 (current remaining amount Q0 ') of each C.

Therefore, in this embodiment, the pumps 11A, 11B and 11C and the flowmeters 12A, 12B and 12C can be used both during refueling and replenishment of the oil liquids A, B and C, and the refueling amount Q
k and the remaining amount Q0 (current remaining amount Q0 ') in the oil storage tanks 1A, 1B, 1C can be easily confirmed and the pump 11
A, 11B, 11C and flow meters 12A, 12B, 12
The number of Cs used can be reduced, and the workability during assembly and the maintainability can be greatly improved, and other various effects are exhibited.

Although the vehicle refueling meter has been described as an example in the above-mentioned embodiment, the present invention is not limited to this, and is used, for example, in an oil exchanger for exchanging engine oil or for refueling kerosene. It may be applied to Lori vehicles. When applied to an oil exchanger, a new oil nozzle 22 having check valves 21A, 21B, 21C is provided on the tip side of the oil supply pipes 6A, 6B, 6C as in the modification shown in FIG. , 6B, 6C, the oil liquid such as engine oil may be supplied from the new oil nozzle 22.

The present invention can also be applied to a large-scale oil supply device installed in a petroleum stockpiling base or the like. In this case, a large oil storage tank provided in the petroleum stockpiling base is used to feed gasoline through an oil supply pipe or the like. Can be used as a pump and a flow meter when shipping oil liquid such as oil tank or when replenishing the oil liquid from the tanker to this oil storage tank. You can easily check based on the signal.

Further, in the above-mentioned embodiment, the case where three kinds of oil liquids A, B and C are refueled or replenished is described as an example, but the present invention is not limited to this, and for example, one kind or two kinds. Of course, the present invention can be applied to the case of supplying or replenishing oil liquid or four or more kinds of oil liquid.

[0065]

As described above in detail, according to the present invention, the first oil supply pipe connected to the oil storage tank for storing the oil liquid is the first oil supply pipe.
Is connected to one end side of the dual-purpose pipe via the switching valve, and the second oil supply pipe connected to the oil liquid discharge port is connected to the other end of the dual-purpose pipe via the second switching valve. First connected to the oil tank to replenish the oil liquid from the outside into the oil storage tank
Is connected to one end side of the dual-purpose pipe via the first switching valve, and the second supplementary pipe connected to the oil storage tank is connected to the other end side of the dual-purpose pipe via the second switching valve. And a pump and a flow meter are provided in the middle of the combined pipe, and one end side of the combined pipe is selectively connected to the first oil supply pipe and the first supply pipe by the first switching valve. Since the second switching valve selectively connects the other end of the dual-purpose pipe to the second oil supply pipe and the second replenishment pipe, the pump and the refueling pipe are connected to each other. It can also be used as a flow meter, you can easily check the amount of oil supply and the remaining amount in the oil storage tank, and you can reliably reduce the number of parts such as pumps, which can greatly improve workability and maintainability during assembly. And so on.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram showing a vehicle refueling meter according to an embodiment of the present invention.

FIG. 2 is a control block diagram of the vehicle fuel dispenser shown in FIG.

FIG. 3 is an explanatory diagram of a refueling procedure map stored in a storage area of the control device.

FIG. 4 is an explanatory diagram of a supply procedure map stored in a storage area of a control device.

FIG. 5 is a flowchart showing a refueling control process by the control device.

FIG. 6 is a flowchart showing a replenishment control process by a control device.

FIG. 7 is a partial configuration diagram showing a new oil nozzle and the like of an oil exchanger according to a modification.

[Explanation of symbols]

 1A, 1B, 1C Oil storage tank 2A, 2B, 2C, 6A, 6B, 6C Oil supply pipe 3A, 3B, 3C, 5A, 5B, 5C Switching valve 4A, 4B, 4C Dual-use pipe 7A, 7B, 7C Oil supply nozzle (Discharge port) ) 8A, 8B, 8C Oil tank 9A, 9B, 9C, 10A, 10B, 10C Supply pipe 11A, 11B, 11C Pump 12A, 12B, 12C Flowmeter 17 Controller A, B, C Oil liquid

Claims (1)

[Claims] 1. A first oil supply pipe, one end of which is connected to an oil storage tank for storing oil liquid, and the other end of which is connected to a first switching valve, and one end of which is a first switching valve connected to the first oil supply pipe. And the other end side is connected to the second switching valve, the one end side is connected to the dual purpose pipe via the second switching valve, and the other end side is connected to the oil liquid discharge port. And a second refueling pipe, and a first replenishment in which one end side is connected to the oil tank for replenishing the oil liquid from the outside into the oil storage tank and the other end side is connected to the dual-use pipe via the first switching valve. A pipe, a second replenishment pipe having one end side connected to the dual-use pipe via the second switching valve and the other end side connected to the oil storage tank, and a pump and a flow meter provided in the middle of the dual-use pipe. And the one end of the dual-purpose pipe is connected to the first oil supply pipe by the first switching valve. One replenishment pipe is selectively switched and connected, and the other end of the dual-use pipe is selectively switched and connected by the second switching valve to the second oil supply pipe and the second replenishment pipe. Refueling device.