JP3032876B2 - Refueling device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refueling device capable of checking the flow rate of a flow meter provided in a refueling device as needed.

[0002]

2. Description of the Related Art Conventionally, a refueling device used in a gas station such as a gas station is provided with a flow meter, and a refueling amount is displayed on a display or the like. The flow meter must be correctly weighed and displayed.

[0003] However, such a flowmeter may become confused when used for a long period of time, so that it is required to perform a flow rate verification every five years. In this flow rate verification, for example, the refueling amount is set to a large flow rate and a small flow rate,
1 / min and 8l / min etc., twice each,
It is required that the instrumental error is within a certain range.

[0004]

However, in the conventional lubricating apparatus, there is no apparatus capable of automatically performing the same measurement as that required for the flow rate verification and displaying the instrument difference on the display. However, there was a drawback such as In addition,
Japanese Utility Model Publication No. 48-121 discloses a technique relating to a device for inspecting a difference in a flow meter in a refueling machine.
No. 58 discloses a refueling system in which a circulation circuit provided with an inspection flow meter is provided by a branch pipe different from a normal flow meter, and a comparison result between the flow meter and the inspection flow meter is reported to an alarm. Techniques relating to the device are disclosed. However, such a technique cannot automatically measure and inspect a large flow rate and a small flow rate as required for the flow rate verification.

Accordingly, an object of the present invention is to provide a refueling apparatus capable of automatically measuring the instrumental difference of a flow meter at a large flow rate and a small flow rate a required number of times and displaying the measurement result.

[0006]

In order to achieve the above object, the present invention provides a lubricating apparatus for supplying a fluid sucked by a pump through a flow meter, a lubricating pipe, and a lubricating hose from a lubricating nozzle. A throttle valve for switching between a large flow rate and a small flow rate provided on the oil supply pipe downstream of the flow meter, and a branch pipe switched to the oil supply pipe by a three-way switching valve. A flow meter for inspection provided in the branch pipe, and another branch pipe for returning the fluid flowing through the flow meter for inspection to the upstream side of the pump, switching the throttle valve to a large flow rate and a small flow rate, Compare the lubrication amount measured by the flow meter with the lubrication amount measured by the inspection flow meter,
The comparison result is displayed on the display.

[0007]

In the lubricating apparatus according to the present invention, the throttle valve is switched so that the large flow rate and the small flow rate flow through the branch pipe via the three-way switching valve, and the lubrication amount measured by the inspection flow meter and the lubrication measured by the inspection flow meter. By comparing the flow rate with the flow rate and displaying the comparison result on the display, the flow rate can be verified by automatically measuring the instrumental difference of the flow meter at a large flow rate and a small flow rate a required number of times.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a first embodiment of the present invention; FIG. 1 is a diagram illustrating the configuration of a fuel supply device according to a first embodiment of the present invention, and FIG. 2 is a piping diagram of the first embodiment of the present invention.

In these figures, the refueling apparatus of this embodiment is installed and fixed on the ground, and includes a refueling means 10 used for normal refueling operation and a flow rate inspection means 30 used for flow rate inspection.

The oil supply means 10 is provided with a pump 12 driven by a pump motor 11 to suck oil from an underground tank (not shown) through a suction pipe 13, and a flow meter 14 and an oil supply pipe 15.
The fuel is supplied from a fueling nozzle 17 to a fuel tank of a vehicle or the like through the fueling hose 16 and the fueling hose 16, for example. The flow meter 14 is provided with a flow rate pulse transmitter 18 for measuring the amount of refueling, and a pulse emitted from the flow rate pulse transmitter 18 is converted into a count value by a control device 19 for controlling each part. It is displayed on the display 20. The refueling nozzle 17 is configured to be detachably mounted on the nozzle holder 21. In the vicinity of the nozzle hook 21,
A nozzle switch 22 that is turned on and off by attaching and detaching the refueling nozzle 17 is provided. When the nozzle switch 22 is in an on state, the pump motor 11 is operated by a signal from the control device 19.

The flow rate inspection means 30 includes a throttle valve 31 for controlling the flow rate, first to third three-way switching valves 32 for switching the flow path,
33, 34, an inspection flow meter 35, a verification switch 36 for starting an inspection, and the like. The throttle valve 31, the three-way switching valves 32, 33, and 34 are controlled based on a signal from the control device 19, and the inspection is performed. The control unit 19 compares the flow rate measured by the flow meter 35 for use with the flow rate measured by the normal flow meter 14, and displays the instrumental difference determination result on the display 20.

The throttle valve 31 has a flow rate of 45 l / m, for example.
It is a solenoid valve that can be switched between two stages of full opening and small opening of 8 l / min, and is provided in the oil supply pipe 15 downstream of the flow meter 14. First and second three-way switching valves 32, 33
Is a solenoid valve that switches the flow path in three directions, and a throttle valve 31
Is provided in the oil supply pipe 15 on the downstream side. Branch pipes 37, 38 are connected to the first and second three-way switching valves 32, 33, and a flow meter 35 for inspection is provided in the branch pipes 37, 38. Further, it is connected to a third three-way switching valve 34 composed of branch pipes 37 and 38, and the three-way switching valve 34
The suction pipe 13 of the pump 12 is connected to a branch pipe 39.

The inspection flow meter 35 is provided with balls 41 which move inside a cylindrical pipe 40 together with a fluid, and first and second detecting means for detecting the position of the balls 41 at both ends of the pipe 40. Sensors 42 and 43 are provided. Such sensors 42 and 43 include switches mechanically operated by the ball 41 or the ball 41.
A switch or the like for detecting the position by electromagnetic or optical means is used. The detection signals of these sensors 42 and 43 are given to the control device 19. In addition, certification switch 3
For switch 6, a switch that is turned on with a key is used because it is sufficient to perform the operation several times a year.

Next, an example of the operation of the oil supply device having the above configuration will be described with reference to a flowchart. FIG. 3 is a flowchart for explaining an operation example of the oil supply device of the first embodiment of the present invention.

In FIG. 1, during normal refueling,
When the refueling nozzle 17 is removed from the nozzle hook 21 and the nozzle switch 22 is turned on (ST1), the previous refueling amount on the display 20 is returned to zero, the pump motor 11 is turned on (ST2), and the pump 12 is turned on. The valve from the refueling nozzle is opened to start refueling, and the signal from the flow rate pulse transmitter 18 of the flow rate type 14 is counted and displayed on the display 20 as a refueling amount.
(ST3). When the refueling nozzle 17 is hung on the nozzle hook 21 and the nozzle switch 22 is turned off (ST4), the pump motor 11 is turned off (ST4).
5) The drive of the pump 12 stops.

Next, when the flow meter 14 is verified,
When the refueling nozzle 17 is hung on the nozzle hanger 21 and the nozzle switch 22 is off, the verification switch 36 is turned on (ST11). The first to third three-way switching valves 32, 33, and 34 are a throttle valve 31, a first three-way switching valve 32, an inspection flow meter 35, and a third three-way switching valve 3.
4. Switching is performed so that a circulation path is formed in the order of the suction pipe 13, the oil supply amount of the display 20 is returned to zero, and the pump motor 11 is turned on (ST12). As a result, the pump 12 rotates, and the suction pipe 1 passes from the flow meter 14 through the throttle valve 31 and the circulation path formed by the above-described valve switching.
Return to 3. In the inspection flow meter 35, the ball 41 starts moving together with the fluid flowing inside the pipe 40 (FIG. 2).
The ball 41 is initially located on one side (lower side) of the pipe 40 as shown in FIG. When one of the sensors (the first sensor 42) detects the ball 41 (ST1).
3), the display 20 starts the measurement display (ST14), and when the other sensor (the second sensor 43) detects the ball 41 (ST15), the measurement ends and the throttle valve 31 is closed,
Subsequently, for the next measurement, the first to third three-way switching valves 3
2, 33, 34 are a throttle valve 31 and a first three-way switching valve 3
2. The second three-way switching valve 33, the inspection flow meter 35, the third three-way switching valve 34, and the suction pipe 13 are switched so that a circulation path is formed in this order, and the display on the display 20 is reset to zero. (ST16). Next, when a certain period of time T, for example, one second has elapsed and the flow of the valve or the fluid has stabilized (ST17), it is determined whether the measurement of the same flow rate has been repeated twice (ST18).
When it is not repeated, the throttle valve 31 is fully opened and the measurement is performed again. As a result, the flow meter 14 passes through the throttle valve 31 and further passes through the circulation path formed by the above-described valve switching,
Return to the suction pipe 13. In the inspection flow meter 35, the pipe 40
The ball 41 starts moving with the fluid flowing in the direction opposite to the previous measurement inside the ball (the ball 41 is a pipe 40
On the other side (upper side).) Then, the measurement display is performed in the same manner. Next, when the measurement of the large flow rate is repeated twice, the throttle valve 31 is slightly opened (ST20), it is determined whether the measurement has been repeated four times (ST21), and the same measurement is performed again. When the measurement is repeated four times, that is, when two measurements at a small flow rate and two measurements at a large flow rate are involved, the pump motor 11 is turned off and the first and second three-way switching is performed. The valves 32 and 33 are switched to a state where normal refueling is performed, the throttle valve 31 is fully opened, and the instrument difference determination display is performed on the display 20 based on the above measurement result (ST2).
2).

According to the above configuration, by turning on the verification switch 36, the throttle valve 31 is controlled under the control of the controller 19.
And the first to third three-way switching valves 32, 33, and 34 are switched, and the large flow rate and the small flow rate determined by the verification are measured twice each by the inspection flow meter 35, and the measured value and the flow meter 1 are measured.
4 can be automatically displayed on the display 20 by comparing the measured values obtained from the measurement results obtained in Step 4.

FIG. 4 is a view for explaining the configuration of a fuel supply device according to a second embodiment of the present invention, and FIG. 5 is a piping system diagram of the second embodiment of the present invention. The parts corresponding to the first embodiment are denoted by the same reference numerals.

In these figures, the refueling device of the present embodiment is a device capable of refueling two kinds of fluids, for example, high octane and regular, respectively. A three-way switching valve 51 is added so that two inspection flowmeters 35 can be shared. Each system has the same configuration as that of the first embodiment, and the configuration of one side is the same as that of the first embodiment. The other configuration is indicated by a symbol with a 'appended to it, and detailed description is omitted.

According to the lubricating apparatus having the above-described structure, when one of the two types of fluids is inspected, one of the verification switches 36 and 36 'is turned on, thereby explaining the first embodiment shown in FIG. According to the same procedure as described above, the instrument difference judgment display can be automatically displayed on the displays 20 and 20 '.

In each of the above embodiments, the inspection flow meter 35 has a ball 41 which moves together with the fluid inside the pipe 40, and the position of the ball 41 is
Although the example in which the detection is performed by the first and second sensors 42 and 43 arranged on both ends of the above has been described, the present invention is not limited to this.
For example, in a piston type flow meter, the stroke of the piston may be detected by a linear sensor. The arrangement and switching operation of each valve are not limited to the embodiment as long as at least the large flow rate and the small flow rate can be measured twice each.

[0022]

As described above, according to the present invention, in the lubricating apparatus, the throttle valve is switched to flow the large flow rate and the small flow rate to the branch pipe via the three-way switching valve. By comparing the amount of lubrication measured with the inspection flow meter and displaying the comparison result on the display, the instrument difference of the flow meter is automatically measured at the large flow rate and the small flow rate as many times as necessary, and the flow rate verification There is an effect that can be done.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a configuration of a fueling device according to a first embodiment of the present invention.

FIG. 2 is a piping diagram of a first embodiment of the present invention.

FIG. 3 is a flowchart illustrating an operation example of the oil supply device according to the first embodiment of the present invention.

FIG. 4 is a diagram illustrating a configuration of a fuel supply device according to a second embodiment of the present invention.

FIG. 5 is a piping diagram of a second embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 10 Refueling means 11, 11 'Pump motor 12, 12' Pump 13, 13 'Suction pipe 14, 14' Flow meter 15, 15 'Refueling pipe 16, 16' Refueling hose 17, 17 'Refueling nozzle 18, 18' Flow pulse Transmitters 19, 19 'Controllers 20, 20' Indicators 21, 21 'Nozzle hook 22, 22' Nozzle switch 30, 30 'Flow rate inspection means 31, 31' Throttle valve 32, 32 ', 33, 33', 34 Switching valve 35 Inspection flow meter 36, 36 'Verification switch 37, 37', 38, 39, 39 'Branch pipe 40 Pipe 41 Ball 42, 43 Sensor

Claims (1)

(57) [Claims] 1. A through the fluid sucked through the suction pipe by a pump and flow meter and the oil supply pipe and the oil supply hose refueling from the filler nozzle, the fuel supply apparatus for displaying on the display the oil amount measured by the flow meter, a throttle valve for switching the large flow rate and low flow rate provided to the oil supply pipe downstream of the flowmeter, said diaphragm
A first downstream and branch pipe is switched by the second three-way selector valve provided in the oil supply pipe of the valve, the inspection flow meter provided in the branch pipe, the fluid flowing through the test flowmeter of the third three
Another branch pipe returning to the upstream side of the pump via the one-way switching valve ,
The throttle valve controls the switching of the first to third three-way switching valves.
And the flow rate measured by the flow meter and the inspection flow meter
And a control device for comparing the measured flow rate, the control
The switching Rutotomoni the large flow and the small flow rate throttle valve in the apparatus
A refueling device that switches first to third three-way switching valves , compares the refueling amount measured by the flow meter with the refueling amount measured by the inspection flow meter, and displays the comparison result on the display.