JPH0764381B2 - Refueling device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixed type oil supply device installed on an island of a gas supply station, and more particularly to an oil supply device provided with a plurality of oil supply systems in a single main body.

[Prior art]

Conventionally, as a multi-lubrication system type refueling device having two refueling systems, those shown in FIGS. 6 and 7 are known.

In the figure, one system is represented as "A" and the other system is represented as "B", where 1 is a casing forming the main body of the feeder, and 2A and 2B are fixed pipes arranged in the casing 1. Then, one end of the fixed piping 2A, 2B is connected to an underground tank (not shown), in the middle of which pumps 4A, 4B driven by motors 3A, 3B, a flow meter 5A for measuring the amount of refueling,
5B is provided, and the flowmeters 5A and 5B are provided with transmitters 6A and 6B for transmitting flow rate pulses proportional to the measured flow rate.

7A and 7B are hoses arranged on the outer surface side of the front panel of the casing 1, and the base ends of the hoses 7A and 7B are fixed pipes 2A,
It is connected to the other end of 2B, and its tip has oil filler nozzles 8A and 8B.
Is provided. And, a nozzle hook 9A for hanging and removing the oil supply nozzles 8A, 8B on the front panel of the casing 1
9B are provided close to each other, and nozzle switches 10A, 10B that are opened and closed by hanging and unplugging the oil supply nozzles 8A, 8B are provided in the nozzle hooks 9A, 9B. 11A and 11B are indicators provided on the upper side of the front panel of the casing 1 to display the amount of oil supply.

Further, 12A and 12B are control circuits provided in the casing 1. The control circuits 12A and 12B output oil from nozzle switches 10A and 10B when the oil supply nozzles 8A and 8B are removed from the nozzle hooks 9A and 9B. When the motor 3A, 3B is started by the closing signal as the start signal, the function to reset the previous display value to zero by the indicators 11A, 11B and the nozzles 9A, 9B for refueling nozzles 8A, 8B A function to stop the motors 3A, 3B by the opening signal as a refueling work end signal output from the switches 10A, 10B, and the flow rate pulses output from the transmitters 6A, 6B are counted and displayed on the indicators 11A, 11B. It has a function and.

In the oil supply device thus configured, the oil supply nozzle 8A
One refueling system including regular gasoline, refueling nozzle
The other refueling system including 8B is high octane gasoline.

Now, when removing the refueling nozzle 8A of one refueling system from the nozzle hook 9A, a closing signal is output from the nozzle switch 10A, and the motor 3A is started via the control circuit 12A,
The previous display value of display 11A is reset to zero. And
When the refueling nozzle 8A is inserted into the fuel tank of the vehicle and opened, the regular gasoline in the underground tank is discharged from the refueling nozzle 8A via the fixed pipe 2A, pump 4A, flow meter 5A, and hose 7A. Is measured by the flowmeter 5A, and the transmitter
The flow pulse from 6A is counted by the control circuit 12A, and the display 1
Displayed at 1A. When refueling is completed, the refueling nozzle 8A is closed and the nozzle hook 9A is engaged, and the closing signal is output from the nozzle switch 10A, and the motor 3A is stopped.

On the other hand, even when the other refueling system including the refueling nozzle 8B is used, the high octane gasoline can be refueled in the same manner as described above.

[Problems to be solved by the invention]

However, although the two refueling systems have the advantage of being able to perform refueling work independently of each other, refueling is performed simultaneously in each system, and the refueling nozzles of the systems that have finished refueling by mistake are mistaken for other systems. It may be hung on the nozzle. That is, assuming that the refueling system including the refueling nozzle 8B finishes refueling earlier, the refueling nozzle 8B may be erroneously hung on the nozzle hook 9A of one refueling system.

In such a case, since the closing signal is output from the nozzle switch 10A to the control circuit 12A, there is a problem that the motor 3A stops regardless of refueling using the refueling nozzle 8A and the refueling is interrupted. is there.

The present invention has been made in view of the above-mentioned problems of the conventional technology, and determines whether or not the self-refueling system is refueling, and only when it is determined that refueling is not, the nozzle switch signal by the nozzle switch ( It is an object of the present invention to provide an oil supply device that outputs an open signal or a close signal) to a control circuit to prevent erroneous operation.

[Means for solving problems]

In order to solve the above problems, the refueling device according to the present invention includes a plurality of refueling systems including a pump driven by a motor, a flow meter, and a refueling nozzle provided at the tip of a hose, and each refueling system includes: A nozzle hook on which a refueling nozzle is placed; a nozzle switch attached to the nozzle hook, which outputs a refueling work start signal when the refueling nozzle is removed and outputs a refueling work end signal when the refueling nozzle is hung; This is a type in which a control circuit for driving the motor of the self-refueling system by a refueling work start signal from the nozzle switch and stopping the motor of the self-refueling system by a refueling work end signal are provided.

The features of the configuration adopted by the present invention include a refueling detection means for detecting whether or not the self-refueling system is in refueling, and a refueling operation start signal by removing the refueling nozzle of the self-refueling system from the nozzle hook. Even if the refueling work end signal is output from the nozzle switch of the self-refueling system by hooking the refueling nozzle of the other refueling system to the nozzle hook of the self-refueling system in the output state, the detection means during the previous refueling of the self-refueling system This is because the control circuit is provided with a signal control circuit for continuing to output the refueling operation start signal of the self-refueling system while the detection signal is being output from the control circuit.

[Action]

In the refueling device configured in this way, if the refueling nozzle of the self-refueling system among the plurality of refueling systems is removed from the nozzle hook to start the refueling work, the motor is activated by outputting a refueling work start signal from the nozzle switch. When driven, the refueling nozzle is inserted into the fuel tank and the valve is opened to refuel.

After refueling, hang the refueling nozzle on the nozzle hook,
The nozzle switch outputs a refueling operation end signal to stop the motor. This completes the refueling work.

On the other hand, if the fueling nozzle of the other fueling system is accidentally hooked to the nozzle hook of the self-lubricating system during the fueling work of the self-fueling system, the nozzle switch provided on the nozzle hook outputs a refueling work end signal. To be done.

However, in the present invention, the refueling detection means and the signal control circuit are provided, and the signal control circuit uses the self-refueling system during refueling, and accidentally hangs the refueling nozzle of another refueling system on the nozzle hook. While the detection signal is being output from the refueling detecting means of the self-refueling system, the refueling work start signal of the self-refueling system is continuously output to the control circuit. Accordingly, the control circuit can perform refueling without any trouble even if the refueling nozzle of the other refueling system is hooked on the nozzle hook of the self-refueling system during the refueling operation in the self-refueling system.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 to 5. It should be noted that the same components as those of the above-described conventional technique are designated by the same reference numerals and the description thereof will be omitted.

First, FIGS. 1 to 4 show a first embodiment of the present invention. Note that, in FIG. 3, the other oil supply system is the same as the one oil supply system, and therefore the illustration thereof is omitted.

In the drawing, 21A and 21B are retriggerable monostable multivibrators (hereinafter referred to as "RM
M circuit 21 ”), the RMM circuit 21 sends a refueling detection signal in the“ H ”state while the flow rate pulses from the transmitters 6A and 6B continuously arrive within a predetermined time (for example, within 1 second). The transmitter 6A, 6B and the RMM circuits 21A, 21B are used to output the refueling detection circuit 22A, 22B of the present embodiment (however, the refueling detection circuit 2
2B is not shown).

23A and 23B are signal control circuits. One of the signal control circuits 23A and 23B is a signal control circuit 23A, and the Schmitt circuit 24, knot circuits 25 and 26, and AND circuits 27, 28, 29 and 30 are shown in FIG. ,
Monostable multivibrator for trigger pulse generation 31, 32,
33, 34 (hereinafter referred to as "MM circuits 31, 32, 33, 34"), RS flip-flop circuits 35, 36 (hereinafter referred to as "FF circuits 35, 36"), and the like. And the nozzle switch 10
A is connected to the input side of the Schmitt circuit 24, the output side of the Schmitt circuit 24 is connected to the input sides of the AND circuits 27 and 30, the knot circuit 25, and the RMM circuit 21A is the input of the knot circuit 26 and the AND circuits 29 and 30. , The output side of the knot circuit 25 is connected to the input side of the AND circuits 28 and 29, and the output side of the knot circuit 26 is connected to the input side of the AND circuits 27 and 28.
The output side of the AND circuits 27, 28, 29, 30 has MM circuits 31, 3
2, 33, 34 are provided respectively, and the output side of the MM circuits 31, 32 is FF.
The set input terminal S and the reset input terminal R of the circuit 35 are respectively connected, and the output sides of the MM circuits 33 and 34 are respectively connected to the set input terminal S and the reset input terminal R of the FF circuit 36. Further, the output terminal Q of the FF circuit 35 is the control circuit 12A.
The output terminal Q of the FF circuit 36 is connected to the alarm 37A. The other signal control circuit 23B also has the same configuration as described above, the input side is connected to the nozzle switch 10B, the RMM circuit 21B, the output side is the control circuit 12B,
It is connected to the alarm device 37B.

Although the present embodiment is configured in this way, the case where the refueling nozzle 8B of the other refueling system is accidentally hung on the nozzle hook 9A while refueling in one refueling system will be described as an example. This will be described with reference to the time chart shown in the figure.

First, when the refueling nozzle 8A is hooked on the nozzle hook 9A, the knot circuits 25 and 26 are in the "H" state, and the AND circuit 28
Are held in the "H" state, but all others are in the "L" state.

Now, when the refueling nozzle 8A is removed from the nozzle hook 9A, a closing signal as a refueling operation start signal is output from the nozzle switch 10A, and the Schmitt circuit 24 is in the "H" state at a voltage equal to or higher than the threshold level. As a result, the AND circuit 27 is brought into the “H” state by the output from the Schmitt circuit 24, the MM circuit 31 outputs a trigger pulse at the rising edge thereof, sets the FF circuit 35 in the set state, and outputs the closing signal to the control circuit 12A. To do. At this time, since the knot circuit 25 is in the "L" state, the AND circuit 28 is also in the "L" state.

When the closing signal is input to the control circuit 12A as described above,
The control circuit 12A activates the motor 3A, and the display 11A is reset to zero. Then, when the supply nozzle 8A is inserted into the fuel tank of the vehicle and opened, the regular gasoline in the underground tank is discharged from the refueling nozzle 8A via the fixed pipe 2A, the pump 4A, the flow meter 5A, and the hose 7A. 5A flow meter
The flow rate pulse from the transmitter 6A is counted by the control circuit 12A and displayed on the display 11A. On the other hand, by continuously inputting the flow rate pulse from the transmitter 6A, the RMM
The circuit 21A is in the "H" state, the knot circuit 26A and the AND circuit 28 are in the "L" state, and the AND circuit 30 is in the "H" state.
The MM circuit 34 outputs a trigger pulse at the rise of the state, and the FF circuit 36 is reset. Since the FF circuit 36 is in the reset state in advance, no special operation is performed.

Thus, while the refueling of one refueling system is in progress, the refueling work of the other refueling system is completed and the refueling nozzle 8B
Suppose you accidentally hung it on one of the nozzle hooks 9A.

In this case, since the nozzle switch 10A is closed and the opening signal as the refueling operation end signal is output to the Schmitt circuit 24, the Schmitt circuit 24 is in the "L" state. During this time, since the signal from the RMM circuit 21A is input to the AND circuit 29, the Schmitt circuit 24 brings the knot circuit 25 into the "H" state again, and the AND circuit 29 opens the gate. As a result, the rise of the MM circuit
A trigger pulse is output from 33, the FF circuit 36 is set, and an alarm signal is output from the output terminal Q thereof to the alarm 37A to notify that the refueling nozzle 8B has been accidentally applied. Since the FF circuit 35 is held in the set state even while the alarm device 37A is operating, the state in which the opening signal is output to the control circuit 12A is continuously held, and the motor 3A is stopped. There is no such thing.

When erroneous operation is noticed by the operation of the alarm device 37A, the refueling nozzle 8B of the other refueling system is removed from the nozzle hook 9A.
As a result, the nozzle switch 10A is closed again,
The Schmitt circuit 24 also goes into the "H" state, the knot circuit 25 returns to the "L" state, and the AND circuit 29 goes into the "L" state. On the other hand, when the AND circuit 30 is brought to the "H" state again, a trigger pulse is output from the MM circuit 34, the FF circuit 36 is reset, and the operation of the alarm 37A is stopped.

When the refueling further progresses and the desired refueling amount is reached, the refueling nozzle 8A is closed. As a result, the output of the flow rate pulse from the oscillator 6A is also stopped, and if the flow rate pulse has not arrived for a predetermined time or longer, the RMM circuit 21A is in the "L" state. As a result, the AND circuit 30 goes into the "L" state, the knot circuit 26 goes into the "H" state, and the AND circuit 27 goes into the "H" state.
Although the MM circuit 31 outputs a trigger pulse, since the FF circuit 35 is already in the set state, the closing signal is still output to the control circuit 12A.

Finally, when the fueling nozzle 8A is hung on the nozzle hook 9A, an opening signal is output from the nozzle switch 10A, and the Schmitt circuit 24 is brought into the "L" state. As a result, the AND circuit 27 is in the “L” state, the knot circuit 25 is in the “H” state, the AND circuit 28 is in the “H” state, and the MM circuit 32 outputs a trigger pulse, and the FF circuit 35. Is reset. Therefore, an opening signal is output from the FF circuit 35 to the control circuit 12A, the motor 3A is stopped, and the refueling is completed.

As described above, according to the present embodiment, even if the fueling nozzle 8A of one refueling system is erroneously hung on the nozzle hooking 9A of the refueling nozzle 8B of the other fueling system during refueling, the nozzle switch 10A is still operated by the erroneous operation. Even if it is opened, the opening signal is not output to the control circuit 12A, and it is possible to prevent the situation where the refueling work is interrupted in the middle. Also, at the timing of removing the mistakenly operated refueling nozzle 8B from the nozzle hook 9A,
It is also possible to prevent the display value of 11A from being reset to zero. Further, since the alarm 37A is activated, it is possible to notify the operator of an erroneous operation. The refueling nozzle of one refueling system
The same applies when the 8A is misoperated.

Next, FIG. 5 shows a second embodiment of the present invention, in which the same components as those in the first embodiment are designated by the same reference numerals and the description thereof is omitted. In this embodiment also, the signal control circuit 23A,
The structure and operation of 23B are not particularly different from those shown in FIGS. 3 and 4.

Therefore, in this embodiment, the oscillators 6A and 6A in the first embodiment are
Instead of the oil supply detection circuit 22A, 22B composed of B and the RMM circuit 21A, 21B, an oil supply detection circuit composed of pressure detectors 41A, 41B in the middle of the fixed pipes 2A, 2B is provided. That is, the pressure detectors 41A, 41B are provided on the downstream side of the flowmeters 5A, 5B and provided in the middle of the fixed pipes 2A, 2B, and when the pressure in the fixed pipes 2A, 2B is equal to or lower than a predetermined pressure, "H" It outputs the "refueling detection signal" of the "level" and outputs the "L" level non-refueling detection signal when the pressure is equal to or higher than a predetermined pressure. The pressure detectors 41A and 41B are connected to the input sides of the knot circuit 26 and AND circuits 29 and 30 in FIG. 3 in place of the refueling detection circuits 22A and 22B in the first embodiment.

Although this embodiment is configured in this way, when the fueling nozzle 8A is removed from the nozzle hook 9A as in the first embodiment, the nozzle switch 10A is closed and the motor 3A is activated via the control circuit 12A. . In this state, the refueling nozzle 8A is still closed, so the internal pressure of the fixed pipe 2A is increased to the maximum pressure of the pump 4A (set pressure of the relief valve), and the pressure detector 41A detects "L" level during non-refueling. Outputting a signal.

On the other hand, when the refueling nozzle 8A is inserted into the fuel tank of the vehicle and the valve is opened, the pressure in the vicinity of the hose 7A and the pressure detector 41A sharply decreases, and the "H" level refueling detection signal is output from the pressure detector 41A. Is output.

Thus, the pressure detector 41A of this embodiment exerts exactly the same function as the RMM circuit 21A of the first embodiment, and the signal control circuit 23A operates according to the operation of FIG. Even when refueling using the refueling nozzle 8B,
The pressure detector 41B outputs a detection signal during refueling similarly to the pressure detector 41A.

The embodiment of the present invention is as described above, and the embodiment has exemplified the oil supply system having two systems, but may have a structure having an oil supply system having four systems and six systems. In this case, two or three on the left and right side panels of the casing 1, respectively.
The individual nozzle hooks can be arranged in close proximity.

Although the signal control circuits 23A and 23B have been described as having the specific configuration shown in FIG. 3 in the embodiment, they may be implemented by other circuit configurations or may be implemented in a microcomputer or the like. Good. In this case, the control circuits 12A, 12
The circuit configuration may not be independent of B, and may be provided inside this as a part of the control circuits 12A and 12B.

Further, in the case of the second embodiment, the pressure detectors 41A and 41B have been described as outputting the "H" level refueling detection signal during refueling, but output the "L" level refueling detection signal. It may be one. In this case, pressure detector 41A,
By inserting a knot circuit in the next stage of 41B, compatibility with the circuit of FIG. 3 can be provided.

〔The invention's effect〕

The refueling device according to the present invention is as described above in detail, and the signal control circuit uses the self-refueling system during refueling, even if the refueling nozzle of another refueling system is accidentally hung on the nozzle hook. While the detection signal is being output from the refueling system's refueling detection means, the control circuit is configured to continue outputting the self-refueling system's refueling operation start signal. Even if you hang the refueling nozzle of another refueling system on the nozzle hook of your self-refueling system, you can continue the refueling work without interrupting refueling. For example, the indicator of the self-refueling system will be reset to zero on the way. Such a situation can be prevented, and a great effect is exhibited as a multi-lubrication system type fixed lubrication device.

[Brief description of drawings]

1 to 4 show a first embodiment of the present invention, FIG. 1 is a front external view of a refueling device, FIG. 2 is a block diagram showing the overall construction of the refueling device, and FIG. A specific circuit configuration diagram of the detection circuit and the signal control circuit, FIG. 4 is a time chart for explaining the operation of FIG. 3, FIG. 5 is a block diagram showing the overall configuration of the oil supply apparatus according to the second embodiment, and FIG. FIG. 7 and FIG. 7 relate to a conventional technique, FIG. 6 is a front external view of a conventional fueling device, and FIG. 7 is a block diagram showing the overall configuration of the fueling device. 1 ... Casing, 2A, 2B ... Fixed piping, 3A, 3B ... Motor, 4A, 4B ... Pump, 5A, 5B ... Flowmeter, 6A, 6B ... Transmitter, 7A, 7B ... Hose, 8A, 8B …… Refueling nozzle, 9A, 9B
...... Nozzle hook, 10A, 10B ...... Nozzle switch, 12A, 12B
...... Control circuit, 21A, 21B ...... RMM circuit, 22A, 22B …… Refueling detection circuit, 23A, 23B …… Signal control circuit, 37A, 37B …… Alarm, 41A, 41B …… Pressure detector (lubrication) Medium detection circuit).

Claims (3)

[Claims] 1. A pump driven by a motor, a flow meter,
It has a plurality of oil supply systems consisting of oil supply nozzles provided at the end of the hose, and each of these oil supply systems has a nozzle hook on which the oil supply nozzle is placed, and a nozzle attachment that is attached to the nozzle hook, and when the oil supply nozzle is removed, oil supply work is performed. A nozzle switch that outputs a start signal and a refueling work end signal when the refueling nozzle is applied, and a motor of the self-refueling system is driven by the refueling work start signal from the nozzle switch, and a self-refueling system by the refueling work end signal In the refueling device, each of which is provided with a control circuit for stopping the motor of, the refueling detection means for detecting whether or not the self refueling system is refueling, and the refueling nozzle of the self refueling system are removed from the nozzle hooks. While the start signal for refueling work is being output, the self-refueling system's nozzle can be stopped by hanging the refueling nozzle of the other refueling system on the nozzle hook of the self-refueling system. A signal for continuing the output of the refueling operation start signal of the self-refueling system to the control circuit while the detection signal is being output from the refueling detection means of the self-refueling system even if the refueling operation end signal is output from the slip switch. A refueling device provided with a control circuit. 2. The oil supply apparatus according to claim 1, wherein the oil supply detecting means is for detecting whether or not oil is being supplied by a flow rate signal from each of the flow meters. 3. The refueling device according to claim 1, wherein the refueling detecting means detects whether or not refueling is being performed, based on a pressure in a pipe for each refueling system.