JP2524253B2 - Refueling device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an oil supply device that is installed in a gasoline filling station and supplies oil while measuring oil such as gasoline, light oil, and kerosene from an oil storage tank.

[Conventional technology]

Such a refueling device is basically one in which a pump driven by a motor and a flow meter are provided in the middle of a refueling pipe communicating with an oil storage tank, and a refueling hose having a nozzle valve at the tip is connected to the refueling pipe. Then, when the pump is driven, the nozzle valve is opened and the oil in the oil storage tank is refueled, the flow meter rotates, and the amount of refueling is displayed on the display.

Then, the applicant of the present application previously applied for an oil supply device capable of both normal discharge and high-speed discharge as shown in Japanese Patent Publication No. 51-27887 and acquired the right.

Fig. 4 shows the contents of the tank 1 installed underground.
Pumps 4 and 5 are provided in the middle of the suction pipes 2 and 3 that open inside, and drive motors 28 and 29 are connected thereto. Suction tube 2,3
Is connected to the three inflow pipes 6, 7, 8 via the confluence pipe 27, and flowmeters 9, 10, 11 and preset valves 12, 13, 14 are provided in the middle of the inflow pipes 6, 7, 8, respectively. Further, the low discharge nozzle valves 15 and 16 and the high discharge nozzle valve 17 are respectively connected to the tips.

18, 19 and 20 are indicators of the flow meters 9, 10 and 11, respectively, and 21, 22 and 23 are reset devices of the preset valves 12, 13 and 14, respectively.

Although illustration is omitted, a nozzle switch that closes when the nozzle valves 15, 16 and 17 are removed from the nozzle hooks 24, 25 and 26 is provided.

To explain the operation next, in order to refuel with the low discharge nozzle valve 15, if this is removed from the nozzle hook 24,
The motor 28 of the pump 4 is rotated by the output of the nozzle switch corresponding to this.

Next, by setting a preset switch (not shown) provided near the nozzle valve 15, the preset valve 12
Opens. Therefore, when the nozzle valve 15 is opened, oil such as gasoline in the tank 1 can be sucked up by the suction pipe 2, the pump 4, the confluence pipe 27,
It is discharged from the nozzle valve 15 through the inflow pipe 6, the flow meter 9, and the preset valve 12.

When the discharge amount reaches a preset amount, for example 18, the reset device 21 operates to close the preset valve 12 and stop the discharge, so if the nozzle valve 15 is closed and the nozzle hook 24 is applied, the nozzle switch opens and the motor 28 Stops.

To refuel with the low discharge nozzle valve 16, remove it from the nozzle hook 25, the nozzle switch facing it will close, the motor 28 will rotate with its output, the pump 4 will operate, and the preset valve 13 will open.

Therefore, when the nozzle valve 16 is opened, the gasoline in the tank 1 is discharged from the nozzle valve 16 through the suction pipe 2, the pump 4, the merging pipe 27, the inflow pipe 7, the flow meter 10, and the preset valve 13.

When the discharge amount reaches a preset amount, for example 18, the reset device 22 operates to close the preset valve 13 and stop the discharge, so if the nozzle valve 16 is closed and the nozzle hook 25 is applied, the nozzle switch opens and the pump 4 stops.

When the nozzle valves 15 and 16 are used at the same time, the motor 28 similarly rotates and the pump 4 alone discharges oil from the nozzle valves 15 and 16, respectively.

Next, to refuel with the high discharge nozzle valve 17,
When this is removed from the nozzle hook 26, the nozzle switch corresponding to this is closed, the motors 28 and 29 rotate with its output, the pumps 4 and 5 operate simultaneously, and the preset valve 14 opens.

Therefore, when the nozzle valve 17 is opened, the gasoline in the tank 1 is sucked into the suction pipes 2, 3, the pumps 4, 5, the merging pipe 27, the inflow pipe 8,
Nozzle valve 17 through flow meter 11, preset valve 14
Is discharged from.

When the discharge amount reaches a preset amount, for example 200,
Since the reset device 23 operates to close the preset valve 14 and stop the discharge, the nozzle valve 17 is closed and the nozzle hook 26
The nozzle switch will open and the motors 28 and 29 will stop.

In addition, while using the low discharge nozzle valve 15 or 16,
Nozzle hook trying to use the high discharge nozzle valve 17
Even if it is removed from 26, the motor 29 does not rotate and the pump 5 does not operate.

[Problems to be Solved by the Invention]

As described above, in the Japanese Patent Publication No. 51-27887, the two pumps 4 and 5 are simultaneously operated, and the suction pipes 2 and 3 are used for the tank 1
Highly refueling is performed by sucking up the gasoline in it at the same time, collecting it in the confluence pipe 27, collecting it in the inflow pipe 8, and discharging it from the nozzle valve 17, but the flow meter 11 provided in the inflow pipe 8 The preset valve 14 needs to be large in size to meet the combined flow rate, resulting in high cost.

An object of the present invention is to eliminate the disadvantages of the conventional example, and to use a flow meter or valve used for high-speed oil supply by operating two pumps at the same time, or at least a small oil meter for the flow meter. To provide.

[Means for solving the problem]

In order to achieve the above-mentioned object, the present invention has a pump, a flow meter, and a valve provided in the middle of an oil supply pipe connected to an oil storage tank,
An oil supply hose having a nozzle valve at the tip is connected to this oil supply pipe, two sets of oil supply systems are provided with nozzle switches for the nozzle hooks for connecting this nozzle valve, and the flow meter and valve of these first oil supply systems are connected. Connecting the oil supply pipe for connecting the second oil supply system valve and the oil supply hose with a connecting pipe, and installing a valve in this connecting pipe, and for a flow rate pulse transmitter corresponding to the both flowmeters. An indicator for displaying a calculated value from a calculation circuit to which an output is introduced is provided,
When the refueling nozzle of the refueling system is removed from the nozzle hook and the nozzle switch is closed, the valve of the first refueling system opens,
Further, when the motor of the pump of the first oil supply system is driven and the oil supply nozzle of the second oil supply system is removed from the nozzle hook and the nozzle switch is closed, the valve of the second oil supply system and the valve of the connecting pipe are opened. In addition, the motors of the pumps of both refueling systems are driven, and while one nozzle switch is closed, the other nozzle switch is closed and the refueling operation is not possible, and the oil supply pipe connected to the oil storage tank A pump, a flow meter, and a valve are provided on the way, a refueling hose having a nozzle valve is connected to the end of this refueling pipe, and a first switch system is provided with a nozzle switch on the nozzle hook to hang this nozzle valve, and an oil reservoir. A pump, a flow meter and two valves are installed in the middle of the oil supply pipe connected to the tank, and an oil supply hose having a nozzle valve is connected to the tip of this oil supply pipe. A second oil supply system in which a nozzle switch is provided on a nozzle hook for applying a valve, and an oil supply pipe connecting a flow meter of the first oil supply system and a valve and an oil supply connecting valves of the second oil supply system to each other. A pipe is connected to the pipe by a connecting pipe, and an indicator for displaying a calculated value from an arithmetic circuit to which the outputs of the flow rate pulse transmitters corresponding to the both flowmeters are introduced is provided, and the oil supply nozzle of the first oil supply system is When the nozzle switch is closed and the nozzle switch is closed, the valve of the first oil supply system is opened, and the motor of the pump of the first oil supply system is driven, so that the oil supply nozzle of the second oil supply system is removed from the nozzle hook. When the nozzle switch is closed and the second oil supply system 2
It is a summary that the refueling operation is not possible by opening the individual valves and driving the pump motors of both refueling systems, while the other nozzle switch is closed while one nozzle switch is closed. is there.

[Action]

According to the present invention described in claim 1, in the case of normal refueling, the valve on the discharge side is opened from the confluence portion with the connecting pipe of the first refueling system.

Then, by driving the pump of this refueling system and opening the low discharge nozzle valve connected to the refueling hose, oil is discharged from the oil storage tank through the pump, the flow meter and the valve, and the amount of lubrication measured by the flow meter is measured. Is output by the flow pulse generator, calculated by the arithmetic circuit, and displayed on the display.

At this time, since the valve provided in the connecting pipe is closed, the oil does not flow to the side of the second oil supply system, and even if the oil supply nozzle of the second oil supply system is removed, no signal is output and high-speed oil supply cannot be performed at the same time. .

In the case of high-speed refueling, by simultaneously driving the pumps of both refueling systems and opening the high discharge nozzle valve connected to the refueling pipe of the second refueling system, in the first refueling system, the pump and the flow rate are changed from the oil storage tank. The second oil supply system together with the oil flowing from the oil storage tank of the second oil supply system through the pump, the flow meter, and the valve via the valve of the meter and the connecting pipe.
Is discharged from the nozzle valve of the oil supply system.

Further, the measured values measured by the respective flow meters before the merging are output to the arithmetic circuit by the respective flow rate pulse transmitters, and the arithmetic calculation is performed here to display the merging oil supply amount on the display.

In this way, each flow meter is installed in a single flow path before the two refueling systems join, so it can be a small size,
In addition, the valve of the second oil supply system and the valve of the connecting pipe used when performing high-speed oil supply are located in the flow path before merging, so a small size is required.

According to the present invention as set forth in claim 2, the operation is almost the same as that of the first embodiment, but the valve provided in the second oil supply system used for high-speed oil supply joins the connecting pipe of the second oil supply system. Since it is provided on the discharge side from the section, it must be large in size, but each flow meter is provided in a single flow path before the two oil supply systems join, so a small size is required.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a piping explanatory view showing a first embodiment of the oil supply apparatus of the present invention, in which a pump 40 is provided in the middle of an oil supply pipe 30 opening into an oil storage tank (not shown) provided underground or the like. Connect the drive motor 50 to. Further, the pump 40 of the refueling pipe 30
A flow meter 60 and a valve 70 are provided on the discharge side, a refueling hose 80 is connected to the tip of the refueling pipe 30, and a low-discharging nozzle valve 90 used for normal refueling is attached to the tip thereof. This is the first
Similarly, as a second oil supply system, a pump 41 is provided in the middle of an oil supply pipe 31 that also opens in the tank, and a drive motor 51 is connected thereto. Further, a flow meter 61 and a valve 71 are provided on the discharge side of the pump 41 of the fuel supply pipe 31, a fuel supply hose 81 is connected to the end of the fuel supply pipe 31, and a high discharge nozzle valve used for high-speed fuel supply at the tip thereof. Install 91.

Further, the nozzle switch 10 that closes when the low discharge nozzle valve 90 and the high discharge nozzle valve 91 are removed from the nozzle hooks
0, 101 are provided, and flow rate pulse transmitters 110, 111 are attached to the respective flow meters 60, 61, the output signals of these flow rate pulse transmitters 110, 111 are introduced into the arithmetic circuit 120, and the amount of oil supply connected to the arithmetic circuit 120 is displayed. A total of 130 were provided.

The first refueling system and the second refueling system are connected by a connecting pipe 140 on the discharge side of the respective valves 70 and 71, and a valve 74 is provided in the connecting pipe 140.

Further, in the first oil supply system, a valve 73 is provided on the discharge side from the junction with the connecting pipe 140, and a valve 75 for a small flow rate is provided in parallel with the valve 70.

In the figure, 131 and 132 are integrating indicators as total counters.

A piston type flowmeter can be used as the flowmeters 60 and 61, but a rotary type flowmeter may be used.

 Next, the operation will be described.

First, the case of normal refueling will be described. When the low-discharging nozzle valve 90 on the normal refueling side is removed from the nozzle hook, the nozzle switch 100 is closed, the motor 50 is driven, and the pump 4
0 rotates.

Then, since the valves 70, 73, 75 are opened, if the nozzle valve 90 is opened, the oil will flow from the oil storage tank to the pump 40 and the flow meter 6
Oil is supplied from the nozzle valve 90 through 0, the valves 70, 75, and 73, and the amount of oil supply is measured by the flow meter 60, which is output to the arithmetic circuit 120 as a flow signal by the flow pulse transmitter 110, and the arithmetic circuit 120 is calculated to the amount of liquid and the amount of refueling,
Displayed on the display meter 130.

After refueling the desired amount, close the nozzle valve 90 and hang it on the nozzle hook to open the nozzle switch 100 and open the valve 7
0, 73, 75 are closed, the motor 50 and the pump 40 are stopped, and refueling is completed.

When performing preset refueling, the valve 70 is closed first when the preset amount is approached, and the valve 75 is refueled with a small flow rate to reach the preset amount.
3,75 close and refueling ends.

After that, the nozzle valve 90 is closed, the nozzle is hooked, and the motor 50 and the pump 40 are stopped. In addition, since a signal is not output even if the nozzle for high discharge is removed in order to perform high-speed fueling during normal fueling, high-side fueling cannot be performed.

Next, when performing high speed refueling, remove the high discharge nozzle valve 91 on the high speed refueling side from the nozzle hook to switch the nozzle.
101 is closed, motors 50 and 51 are driven, and pumps 40 and 41 are simultaneously rotated.

In this case, the output of the nozzle switch 101 is the valve 70, 71, 7
Since 4,75 are opened, if the nozzle valve 91 is opened, the oil flows from the oil storage tank through the pump 40, the flow meter 60, the valves 70 and 75, the connecting pipe 140, and enters the oil supply pipe 31, the pump 41, and the flow rate. Nozzle valve 91
Will be refueled from.

The amount of refueling at that time is measured by the flow meter 60 as a flow signal by the flow pulse generator 110, and the flow meter 6
The value measured in 1 is output as a flow rate signal to the arithmetic circuit 120 by the flow rate pulse transmitter 111, and the arithmetic circuit 120 adds and calculates the measured values of both to calculate the liquid amount and the refueling amount. Is displayed in.

After refueling the desired amount, close the nozzle valve 91 and hang it on the nozzle hook to open the nozzle switch 101 and open the valve 7
0, 71, 74, 75 are closed, the motors 50, 51 and the pumps 40, 41 are stopped, and refueling is completed.

When performing preset refueling, the valves 70 and 71 are closed first when the preset amount is approached, and the valve 75 is refueled with a small flow rate to reach the preset amount as in the case of the normal refueling. 75 closes and refueling ends.

After that, the nozzle valve 91 is closed and hooked on the nozzle to stop the motors 50, 51 and the pumps 40, 41. In addition,
Even if the low-discharging nozzle is removed while trying to perform normal refueling during high-speed refueling, no signal is output, so normal refueling cannot be performed.

FIG. 2 shows another embodiment of the present invention.
120 is not a single one, but is composed of a combination of arithmetic circuits 122 and 123 that receive outputs from the flow rate pulse transmitters 110 and 111 and an adder circuit 121 that is connected to these arithmetic circuits 122 and 123. Two indicators, that is, an indicator 134 directly connected to the circuit 122 and an indicator 133 for high-speed refueling connected to the adding circuit 121 are used.

In this case, in the case of normal refueling, the adding circuit 121
The refueling amount is displayed on the display meter 134 without going through.

Further, as still another embodiment, as shown in FIG.
The valve 74 is not provided on the connecting pipe 140, but is provided on the discharge side of the junction with the connecting pipe 140 in the middle of the oil supply pipe 31 in the second oil supply system.

Even with this configuration, the valve 71 and
Since 74 is closed, there is no problem.

However, a large-sized valve 74 is required as a means for handling the combined oil.

It should be noted that the preset valve 75 is not necessary in the case of an oil supply device having no preset function.

〔The invention's effect〕

As described above, the oil supply device of the present invention uses one pump in the case of normal oil supply and operates two pumps in the case of high-speed oil supply at the same time to supply the combined oil. By reducing the size of the flowmeter and the valve, or at least the flowmeter, it is possible to reduce the cost and downsize the entire apparatus.

[Brief description of drawings]

FIG. 1 is a piping explanatory view showing an embodiment of the oil supply device of the present invention,
FIG. 2 is a circuit diagram of essential parts showing another embodiment, FIG. 3 is a piping explanatory view showing still another embodiment, and FIG. 4 is a piping explanatory view showing a conventional example. 30,31 …… Refueling pipe, 40,41 …… Pump 50,51 …… Motor, 60,61 …… Flowmeter 70,71,73,74,75 …… Valve, 80,81 …… Refueling hose 90… … Low discharge nozzle valve, 91 …… High discharge nozzle valve 100,101 …… Nozzle switch, 110,111 …… Flow pulse transmitter 120 …… Computing circuit, 121 …… Adding circuit 122,123 …… Computing circuit, 130,133,134 …… Indicator 131,132 …… Totalizing indicator, 140 …… Connecting pipe

Claims (2)

(57) [Claims] 1. A pump, a flow meter, and a valve are provided in the middle of an oil supply pipe connected to an oil storage tank, and an oil supply hose having a nozzle valve at the tip is connected to this oil supply pipe, and a nozzle hook for applying this nozzle valve is provided. Two sets of oil supply systems provided with nozzle switches are provided, and an oil supply pipe connecting the flowmeter and valve of the first oil supply system and a oil supply pipe connecting the valve of the second oil supply system and the oil supply hose are connected. And a valve is provided in the connecting pipe, and a display is provided for displaying a calculated value from a calculation circuit to which the outputs of the flow rate pulse transmitters corresponding to the both flowmeters are introduced. When the oil supply nozzle of the system is removed from the nozzle hook and the nozzle switch is closed, the valve of the first oil supply system is opened, and the motor of the pump of the first oil supply system is driven, and the oil supply nozzle of the second oil supply system Has a nozzle And the nozzle switch is closed, the valve of the second oil supply system and the valve of the connecting pipe are opened, and the motors of the pumps of both oil supply systems are driven, and while one nozzle switch is closed, the other nozzle The refueling device is characterized in that the refueling operation cannot be performed by closing the switch. 2. A pump, a flow meter, and a valve are provided in the middle of an oil supply pipe connected to an oil storage tank, and an oil supply hose having a nozzle valve at its tip is connected to the oil supply pipe, and a nozzle hook for applying this nozzle valve is provided. A pump, a flow meter, and two valves are installed in the middle of a first oil supply system with a nozzle switch and an oil supply pipe connected to an oil storage tank, and an oil supply hose having a nozzle valve at the tip is connected to this oil supply pipe. And a second oil supply system in which a nozzle switch is provided on the nozzle hook for applying the nozzle valve, and an oil supply pipe connecting the flow meter of the first oil supply system and the valve and a valve of the second oil supply system The first refueling system is provided with a display for connecting a refueling pipe for connecting with the refueling pipe with a connecting pipe, and displaying a computed value from a computing circuit to which outputs of the flow rate pulse transmitters corresponding to the both flowmeters are introduced. Refueling nozzle Removed from the nozzle hanger with nozzle switch closes, it opens the first valve of the oil supply system, and,
When the motor of the pump of the first oil supply system is driven, the oil supply nozzle of the second oil supply system is removed from the nozzle hook and the nozzle switch is closed, the two valves of the second oil supply system open, and both A refueling device characterized in that a refueling operation is impossible by driving a motor of a pump of a refueling system and closing one nozzle switch while the other nozzle switch is closed.