JPH0688635B2 - Refueling device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a suspended refueling device installed in a gas station such as a gas station.

[Prior Art] In such a refueling device, the hose automatically descends or rises when a power failure occurs while the hose is descending or rising to stop the descent or rising of the hose and the power failure is restored. Therefore, it is dangerous because it is not known when to return.

Further, there is an oil supply device in which the hose is kept in a stopped state even after the recovery, and the ascent / descent switch is pressed to continue the ascent or descent before the power failure. However, if the power outage persists,
It is as dangerous as before because it is not known if the hose was descending or climbing.

[Problem to be solved] Therefore, an object of the present invention is to provide an oil supply device for raising a hose to a predetermined position when a power failure is restored while the hose is being moved up and down.

[Means for Solving the Problems] According to the present invention, the hose elevating motor and the nozzle position detector for detecting whether the refueling nozzle is located at the ceiling position, the intermediate position, or the refueling position are provided, and the nozzle is placed outdoors. The first switch provided lowers from the ceiling position to the intermediate position and rises from the intermediate position to the ceiling position, and the second switch provided near the nozzle lowers from the intermediate position to the refueling position and rises from the refueling position to the middle position. In a refueling device having a control device, the control device has a function of storing whether or not refueling is being performed, and the control device is configured such that the nozzle detector detects whether the ceiling position, the intermediate position, or the refueling position. If the first or second switch is operated when the hose lifting motor is not being driven and refueling is not being performed, the nozzle position detector will output the intermediate position or ceiling position detection output. Until then, it has the function of controlling the hose lifting motor to drive the hose upward.

[Explanation of action and effect] Therefore, when the first switch is pressed when the nozzle stops at the position which is neither the ceiling position nor the refueling position, that is, the intermediate position or the middle of the ascending / descending due to the power failure, the controller reverses the hose elevating motor. To raise the nozzle. Then, when the nozzle is turned on, that is, when the nozzle is lifted to the intermediate position or the ceiling position, the hose lifting motor is stopped. As described above, according to the present invention, when the first switch is pressed when the power is restored after a power failure, the nozzle is always raised to the intermediate position or the ceiling position, which is extremely preferable for safety.

Further, when the second switch is operated, since the nozzle is located between the oil supply position and the intermediate position, the nozzle is raised to the intermediate position at this time. Therefore, it is still safe.

As described above, according to the present invention, when the power is restored after a power failure, the nozzle is raised regardless of which of the first and second switches is operated, which is safe.

Embodiments Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a refueling apparatus embodying the present invention. A canopy 1 is provided on a site X of a refueling station, and a hose processing apparatus 2 is provided on the canopy 1. A hose reel 3 that is driven by a hose lifting motor HM to feed the hose forwardly by the motor and rewind it backwardly is housed in the hose processing device 2. Is wound. A refueling nozzle 5 is provided at the tip of the refueling hose 4, and a switch box 6 is provided near the tip. The switch box 6 is provided with a hand raising / lowering switch (hereinafter referred to as a hand switch) SW2 and a reset switch SW3. When this hand switch SW2 is pushed when the refueling nozzle 5 is at the intermediate position P2, the refueling nozzle 5 is lowered to the refueling position P3,
When it is pressed at the refueling position P3, it is raised to the intermediate position P2. Further, a control device 20 to be described later is provided in the office O, an outdoor lift switch (hereinafter referred to as an outdoor switch) SW1 is provided on the front surface of the office, etc., and when the refueling nozzle 5 is at the ceiling position P1. When pressed, the intermediate position P2
When the fueling nozzle 5 is lowered to, and pushed at the intermediate position P2, it is raised to the ceiling position P1.
As will be described later, after the power failure is restored, the refueling nozzle 5 can be moved up and down even when the refueling nozzle 5 is not located at the positions P1 and P2. The positions P1, P2 and P3 of the refueling nozzles 5 are detected by the nozzle position detectors CSW1, CSW2 and CSW3 which are interlocked with the hose reel 3.

On the other hand, in the oil supply pipe 7 extending from an oil supply tank (not shown),
A pump 8 driven by a pump motor PM is provided, and a pipe 9 connected to the fuel supply hose 4 is connected to the pump 8. The pipe 9 is provided with a flow meter 11 equipped with a flow pulse transmitter 10. The outdoor switch SW1, hand switch SW2, reset switch SW3, hose lifting motor
HM, nozzle position detector CSW1, CSW2, CSW3, pump motor
The PM / flow rate pulse transmitter 10 is connected to a control device 20 provided in the office O, and the refueling data display 12 provided on the wall surface W is connected to the control device 20.

In FIG. 2, the control unit 20 is composed of a microcomputer and is provided with a central processing unit (CPU) 21. Signals from the above-mentioned devices are transmitted via the input / output unit (I / O) 22 to the central processing unit 21. The signal from the central processing unit 21 is transmitted to each of the devices via the input / output unit 22. In addition to the central processing unit 21, the control device 20 includes a ROM (ROM) 23, a RAM (RAM) 24, and a clock 25.

Next, the operation will be described.

FIG. 3 shows the ascending / descending flow by the outdoor switch SW1. When the nozzle is in the ceiling position P1, the outdoor switch SW
When 1 is pressed, the control device 20 causes the hose lifting motor HM to rotate normally (step S5), and as a result, the nozzle descends. This operation is continued until the nozzle position detector (CSW2 is turned on (step S6), and when step S6 is YES, that is, when the nozzle 5 is lowered to the intermediate position P2, the hose lifting motor HM is stopped (this operation is (Note that this is omitted in Fig. 3.) If Steps S2 and S3 are YES, that is, while refueling or driving the hose lift motor HM, the outdoor switch
If SW1 is pressed, it is an erroneous operation and is ignored.

If the nozzle 5 is stopped at a position that is neither the ceiling position P1 nor the refueling position P3, that is, if it is stopped in the middle position P2, or during lifting or lowering due to a power failure, press the outdoor switch SW1 (step S1) Step S2), motor HM
Is not driving (step S3), nozzle position detector CSW1
Is not ON (step S4) and the nozzle position detector CSW3 is not ON (step S7), the controller 20 reverses the hose elevating motor HM (step S8), and as a result, the nozzle is raised. Then, when the nozzle position detector CSW1 or CSW2 is turned on (step S9 or S10), the nozzle 5 moves to the ceiling position P1.
Or the hose lifting motor HM
Is stopped (this operation is omitted in FIG. 3). Therefore, when the outdoor switch SW1 is pressed when the power is restored due to a power failure, the refueling nozzle 5 is always raised to the intermediate position P2 or the ceiling position P1, which is safe.

When the nozzle position detector CSW3 is ON, that is, when the outdoor switch SW1 is pressed while the nozzle is at the oil supply position P3, it is ignored as an erroneous operation (step S7).

FIG. 4 shows the ascending / descending flow by the hand switch SW2. When the hand switch SW2 is pressed for refueling when the nozzle is at the intermediate position P2, a signal is input to the control device 20 (step S11) and the ram 24 does not store refueling status (step S12). Since the lifting motor HM is not driving (step S13) and the nozzle position detector CSW2 is ON (step S14), the control device 20 controls the hose lifting motor HM.
Is normally rotated (step S15), and as a result, the nozzle 5 descends. As a result, the nozzle position detector CSW3 is turned on (step S16). That is, when the nozzle 5 descends to the fueling position, the hose lifting motor HM is stopped (this operation is the fourth
(Omitted in the figure), turn on the pump motor PM, display
The previous refueling data displayed on 12 is reset (step S17).

When steps S12 and S13 are YES, that is, while refueling or driving the hose lifting motor HM, the hand switch SW2
The pressing of is ignored as an erroneous operation.

Then, the nozzle 5 is opened for refueling, and the pulses from the pulse transmitter 10 of the flow meter 11 are counted by the controller 20 and displayed on the display 12 (see FIG. 5). Nozzle is in middle position P2
When stopping at a position other than, that is, when refueling is completed or when stopping due to power failure during lifting
If hand switch SW2 is turned on (step S11), refueling is not being performed (step S12), motor HM is not being driven (step S13), nozzle position detector CSW2 is not being turned on (step S1)
From 4), the process proceeds to step S18, and it is determined whether or not the nozzle 5 is at the oil supply position P3 (step S18). YES i.e.
When refueling is finished and hand switch SW2 is pressed, the motor P
Stop the driving of M (step S19), and hose lifting motor HM
Is reversed (step S20), and as a result, the nozzle 5 rises. Then, the nozzle position detector CSW2 is turned on (step S21), and the hose lifting motor HM is stopped when the nozzle 5 moves up to the intermediate position P2 (this operation is omitted in FIG. 4). If step S18 is NO, that is, if it stops due to a power failure during the ascending / descending operation, pressing the hand switch SWD after the power failure is repaired moves to step S20, in which case the nozzle position detector CSW2 is turned on (step S21). ,
Alternatively, the nozzle position detector CSW1 is turned on (step S3
Since it is reversed to 1), the nozzle 5 rises to the intermediate position P2 or the ceiling position P1. Therefore, if the hand switch SW2 is pressed when the power is cut off and the power is restored, the refueling nozzle 5 is always raised to the intermediate position P2 or the ceiling position P1, which is safe.

FIG. 5 shows the flow rate counting flow. That is, when a flow rate pulse is input to the control device 20 from the flow rate pulse transmitter 10 (step S22), the pulse is counted, the amount of refueling is calculated and displayed on the display 12, and the fact that refueling is in progress is stored in the ram 24. (Step S23). Then, when the flow rate pulse is not input (step S24) and a certain time (for example, 1 second) has passed (step S25), the memory of the ram 24 being refueled is erased (step S26).

In addition, in steps S24 and S25, when the next flow pulse comes within a certain time (step S24),
If the flow rate pulse is input again after erasing during refueling in step 26 (step S22), the pulses are counted and calculated as described above,
The refueling process is stored (step S23).

FIG. 6 shows a continuous refueling flow. That is, if the next customer arrives before raising the nozzle, pressing the reset switch SW3 for continuous refueling (step S27) does not store refueling in the ram 24 (step S28) and the hose lifting motor HM When it is not being driven (step S29), the controller 20 stops driving the pump motor PM (step S3).
0), after a certain time (for example, 1 second) has elapsed (step S3
1) The pump motor PM is turned on again and the display 12 is reset (step S32). If steps S28 and S29 are YES,
That is, during refueling or while the hose lifting motor HM is driving,
Ignore the pressing of the reset switch SW3.

[Effects of the Invention] As described above, according to the present invention, when the first switch located outdoors is pressed when the hose has stopped moving up and down due to a power failure while the hose is moving up and down, the nozzle may be in the ceiling position or the refueling position. If it is not, it is always raised to the ceiling position or the intermediate position, and if the second switch provided near the nozzle is pressed, it is controlled to be raised to the intermediate position when the nozzle is neither the intermediate position nor the refueling position. It is safe because it is done.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram showing an example of a fueling apparatus embodying the present invention, FIG. 2 is a control block diagram, FIG. 3 is a flow chart for raising and lowering by an outdoor switch, FIG. 4 is a flow chart for raising and lowering by a hand switch, FIG. 5 is a flow rate counting flowchart, and FIG. 6 is a continuous refueling flowchart. HM …… Hose lifting motor, PM …… Pump motor, P1 ……
Ceiling position, P2 …… Middle position, P3 …… Refueling position, SW1 ……
Outdoor switch, SW2 ... Hand switch, 5 ... Refueling nozzle, 10 ... Flow rate pulse transmitter, 12 ... Refueling data display, 20 ... Control device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshiyuki Sato 2-12-13 Shibaura, Minato-ku, Tokyo Tatsuno Tokyo Co., Ltd. (56) Reference JP-A-58-216596 (JP, A) JP-A-58 -183496 (JP, A)

Claims (1)

[Claims] 1. A ceiling having a hose lifting motor and a nozzle position detector for detecting whether the refueling nozzle is located at a ceiling position, an intermediate position or a refueling position, and the first switch having the nozzle provided outdoors. In a refueling device having a control device that descends from a position to an intermediate position, rises from the intermediate position to a ceiling position, and descends from an intermediate position to a refueling position and rises from a refueling position to an intermediate position by a second switch provided near the nozzle, The control device has a function of storing whether or not refueling is being performed, and the control device has a nozzle detector at a ceiling position,
If neither the intermediate position nor the refueling position detection signal is output, and the first and second switches are operated when the hose lifting motor is not being driven and refueling is not in progress, the nozzle position detector will be in the middle position or the ceiling. A refueling device having a function of controlling a hose lifting motor to drive the hose upward until a position detection output is made.