JPH0530716B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a liquid supply device that can display a count after a certain period of time after a main valve opens.

[Prior Art] Generally, at a gas station, when the refueling nozzle is removed from the nozzle hook and the nozzle is placed in the refueling state, the main valve of the refueling device opens and the refueling pump rotates. Therefore, the hose pressure is high when refueling starts.

In the case of preset lubrication where a fixed amount of lubrication is applied or integer lubrication where the lubrication amount is an integer value (for example, a value at the end of a multiple of 1, 0.5, or 0.2, or a value in increments of 100 yen or 200 yen), the specified value Since the main valve closes at this value, the hose pressure will be zero when the refueling operation is completed. In other words, in normal refueling work,
Since refueling is started and stopped by opening and closing the valve installed in the refueling nozzle, bulging of the hose due to hydraulic pressure is not a problem. (referred to as refueling), the hose pressure at the end of refueling is atmospheric pressure, so an extra amount of fluid is discharged by the amount of bulge in the hose before refueling begins. In addition, for example, in the case of a hanging oil supply device, bulge errors occur due to the influence of bulges in ceiling piping and other changes in hoses over time. These errors are commonly referred to as jumping amounts.

However, in the conventional technology, it was not possible to accurately correct the above-mentioned jumping amount, so it was difficult to improve the precision of preset oil supply and integer oil supply in particular.

[Object of the Invention] The present invention has been proposed in view of the problems of the prior art described above, and an object of the present invention is to provide a lubricating device that can accurately correct the amount of jumping during preset lubricating or integer lubricating.

[Structure of the Invention] The oil supply device of the present invention has a means for filling a hose with liquid before the start of refueling, and a preset oil supply means. A signal is sent to a storage means for storing a correction amount corresponding to the bulge of the hose in between, and a throttling means for reducing the amount of oil to a small amount when the amount of oil supplied reaches a value obtained by subtracting a predetermined value from the set amount of oil at the time of preset lubrication. and a comparison means for transmitting a refueling stop signal to the refueling stop means when a set refueling amount is reached, and a correction amount stored in the storage means in response to a signal to throttle the refueling output from the comparing means. and transmitting means for sending the flow rate to a counting calculation means, and the counting calculation means counts the flow rate and adds the correction amount to the calculation result.

When implementing the present invention, the main valve is a two-stage stop valve, and by adding the amount of jumping after the first stage main valve closes, the preset lubrication schedule is changed to the first stage.
If the fuel tank becomes full before the stage valve closes and refueling is stopped with the hose swollen by hydraulic pressure, it is preferable to display the correct refueling amount without adding the jumping amount. Further, it is preferable that the amount of jumping be calculated by calculating the average of the three times during the previous preset refueling and counting the average, so that abnormalities in the amount of jumping due to special circumstances can be ignored.

[Operation] According to the present invention having the above configuration,
If the previous lubrication was preset lubrication (or integer lubrication), the control device stores the flow rate corresponding to the swelling of the hose, that is, the amount of jumping, from when the main valve opens until the display meter returns to zero and can be displayed. ,
If the current lubrication is preset lubrication (or integer lubrication), add the amount of jumping. In this way, in the present invention, the swelling of the hose is counted in the preset lubrication amount, so the above-mentioned jumping amount can be corrected, and even in preset lubrication where lubrication ends with the inside of the hose at approximately atmospheric pressure. , can always display the correct value.

[Examples] Examples of the present invention will be described below with reference to the drawings.

FIG. 1 shows a refueling system embodying the present invention, in which an office O is provided on the site X of the refueling station, and a hose processing device 2 is provided in the canopy 1 thereof. A hose reel 4 driven by a hose reel motor 3 is housed within the hose processing device 2, and a refueling hose 5 is wound around the hose reel 4. A refueling nozzle 6 is provided at the tip of the refueling hose 5, and a switch box 7 is provided near the tip. This switch box 7 is provided with a preset switch 8, an integer switch 9, and a lift switch 10, which will be described later. When this lift switch 10 is pressed when the refueling nozzle 6 is in the raised position H, it lowers the refueling nozzle to the lowered position, that is, the refueling position L, and when it is pressed while it is in the lowered position L, it is lowered to the raised position H.
The refueling nozzle 6 is raised up to the maximum height. This rising or falling position is detected by a nozzle position detector 11 provided in the hose processing device 2.

On the other hand, a pump 14 driven by a motor 13 is provided in a fuel pipe 12 extending from a fuel tank (not shown), and the oil pumped up by this pump 14 passes through a flow meter 15, and then passes through a first flowmeter arranged in parallel.
It is connected to the hose reel 4 via a pipe 17 that passes through the stage head valve 16a and the second stage head valve 16b and runs along the canopy 1. Further, the flow meter 15 is provided with a flow pulse generator 18 .

A display is suspended from the canopy 1, and the refueling data display 20 includes a display section 21 for displaying the current amount of refueling, a display section 22 for displaying the unit price per unit amount (1), and a display section 22 for displaying the current refueling amount. Price display section 23
However, the preset data display 24 is provided with a display section 25 for the preset amount and a display section 24 for indicating whether the displayed value on the display section 25 is an amount or an amount. Note that the reference numeral 30 in the figure is a control device.

In FIG. 2, the control device 30 is composed of a microcomputer and is called a central processing unit (CPU).
31, signals from each of the devices are input to the central processing unit 31 via an input/output device (I/O) 32, and signals from the central processing device 31 are input to each of the devices via the input/output device 32. It is now possible to transmit the information to the device. The control device 30 is also provided with a ROM 33, a RAM 34, and a clock 35 other than the central processing unit 31.

Next, the effect will be explained.

Figure 3 is a functional block diagram of hose lifting and metering, Figure 4 is a control flowchart of hose lifting and lowering,
FIG. 5 shows a control flowchart for metering and counting, and FIG. 6 shows a control timing chart for normal refueling.

In FIG. 3, the control device 30 outputs a forward/reverse signal to the hose reel motor 3 based on signals from the lift switch 10 and the nozzle position detector 11, outputs a drive signal to the pump motor 13, and outputs a drive signal to the first stage main valve. 16a and the second stage main valve 16b, a switching signal to the switching means 40, and a timing signal to the clocking means 37. Preset storage means 38 that counts the signals and stores whether or not the previous lubrication was preset lubrication after a certain period of time (for example, 1 second), the preset amount setting means 39 that stores the previous preset value, and the previous one. a clock means 37 which outputs a reset signal to the counting calculation means 43 which stores the refueling data of , a switching signal to the switching means 40 and a discharge signal to the counting means 41; and a preset storage means 3.
When preset lubrication is stored in 8, the pulses from the flow rate pulse generator 18 are counted, and the counted value is stored in the storage means 42 based on the discharge signal from the timer 37.
a counting means 1 for outputting data to the counting means 1; and a storage means 42 having a plurality of (for example, three) storage areas and updating and storing numerical values each time a numerical signal from the counting means 41 is input.
and a counting calculation means 43 which counts the flow rate pulses from the flow rate pulse transmitter 18 and outputs the calculated value to the refueling indicator 20.

A Nozzle descends from the raised position H to the refueling position L In FIG. 4, when the lift switch 10 is pressed at the raised position H for refueling, the lift judgment means 36 of the control device 30 determines that the lift switch 10 has been turned on. (step S1), determines that the refueling nozzle 6 is at the raised position H based on the signal from the nozzle position detector 11 (step S2), outputs a forward rotation signal to the hose reel motor 3, and rotates forward. The refueling nozzle 6 is lowered (step S3). Then detector 1
When the pump descends to the refueling position L based on the signal from 1, the motor 3 is stopped (step S4), a control signal is output to turn on the pump motor 13, and the first and second stage main valves 16a and 16b are turned on. It opens and outputs a switching signal to the switching means 40 so that the flow rate pulses from the flow rate pulse transmitter 18 are counted by the counting means 41, and outputs a timing signal to the timing means 37 (step S5 and time T1 in FIG. 6). . Next, based on the signal from the clock 35, the timer measures the clock for a certain period of time (for example, 1 second) (step S6).
If the preset storage means 38 stores that the previous time was preset lubrication (step 7),
The counting means 41 counts the flow rate, that is, the jumping amount (step S9 and from time T1 to time T) when the flow rate pulse is input (step S8).
2). When step S6 becomes YES, that is, when one second has elapsed, the clock means 37 outputs a reset signal to the preset storage means 38, preset amount setting means 39, and counting calculation means 43 to reset the previous data and display the display 20. , 24 are returned to zero, and the result of counting the amount of jumping by the counting means 41 is updated and stored in the storage means 42, and the state becomes ready for refueling (step S10 and time T3). in this way,
When the indicator is returned to zero and refueling is possible, the hose is inflated by hydraulic pressure.

B Normal refueling In FIG. 5, when the nozzle valve of the refueling nozzle 6 is opened to start refueling, the counting calculation means 43 receives a flow rate pulse signal (step S20).
The flow rate is calculated and the amount is displayed on the display section 21 of the refueling data display 20, and the amount is displayed on the display section 23 (step S21).

Then, the nozzle valve of the refueling nozzle 6 is closed to finish refueling. In this way, during normal refueling, refueling begins with the hose swollen due to hydraulic pressure.
Since refueling ends when the cylinder is inflated, there is no need to add the amount of jumping.

7 is a functional block diagram of preset lubrication, FIG. 8 is a control flowchart of preset lubrication, FIG. 9 is a control flowchart of integer lubrication, and FIG. 10 is a control timing chart of preset lubrication.

In FIG. 7, the control device 30 sets the preset signal from the calculation means 44 that is output when the preset switch 8 or the integer switch 9 is pressed, and outputs the set value to the preset display 24 and the comparison means 45. Based on the signals from the preset amount setting means 39 and the integer switch 9, the numerical value of the counting calculation means is rounded up and outputted to the preset amount setting means 39, and a valve closing signal is outputted to the first stage main valve 16a, and the storage means 42 a calculation means 44 for outputting an integer refueling signal to , and the storage means 42 for outputting the average value of the stored values to the transmission means 46 based on the signal from the comparison means 45 or the signals from the calculation means 44 and the flow rate pulse transmitter 18; The transmitting means 46 outputs pulses corresponding to the numerical value from the storage means 42 to the counting calculating means 43, and when the difference between the numerical value set in the preset amount setting means 39 and the numerical value counted by the counting calculating means becomes a constant number, A valve closing signal is output to the first main valve 16a and a signal is output to the storage means 42, and when both values match, a valve closing signal is output to the second stage main valve 16b and a preset is stored in the preset storage means 38. It is comprised of a comparison means 45 for outputting a refueling signal, and a preset storage means 38 for storing a preset refueling signal from the comparison means 45.

C Preset lubrication In Fig. 8, when the preset switch 8 is pressed (step S30), the preset amount setting means 39
The preset value is set to , and the preset display 2
4 (step S31). Next, when you open the nozzle valve of the refueling nozzle 6 and start refueling,
The amount of refueling is calculated and displayed on the display 20 according to the flow shown in FIG. And counting calculation means 43
The amount of refueling counted is set to the preset amount setting means 39.
When it becomes equal to the value obtained by subtracting a certain amount (for example, 1) from the numerical value set in (step 32), a control signal is output from the comparison means 45 to close the first stage main valve 16a (step S33 and in FIG. 10). time t
1) The storage means 42 outputs the corrected flow rate pulse number corresponding to the average value of the stored jumping amount to the transmission means 46, and the transmission means 46 outputs the pulses to the counting calculation means 43 (step S34 and time t2). to t3). The counting calculation means 43 transmits the pulses from the transmitting means 46 to the flow rate pulse transmitter 18.
When the oil supply amount becomes equal to the set amount (step S35), a control signal is output from the comparison means 45 and the second stage main valve 16b is
is closed, and the fact that the preset oil supply has been performed is stored in the preset storage means 38 (step S36 and time t4). Then, the nozzle valve of the refueling nozzle 6 is closed to complete refueling. In this way, in preset lubrication, lubrication begins when hydraulic pressure is applied to the hose and ends when it is not applied.
The amount of jumping is added after the first stage main valve 16a is closed.

D Integer lubrication In FIG. 9, when normal lubrication is interrupted and the integer switch 9 is pressed (step S40), the calculation means 44
performs a calculation to round up the current oil supply amount counted by the counting calculation means 43 to an integer amount, and outputs the value to the preset amount setting means 39. Then, the integer oil supply amount is set in the preset amount setting means 39 and displayed on the preset display 24, and the first
The stage head valve 16a is closed and an integer oil supply signal is output to the storage means 42 (step S41 and time t1).
Next, the nozzle valve is opened to resume refueling, and when a flow rate pulse is input to the storage means 42 (step
S42), the storage means 42 outputs the average value of the stored jumping amount to the counting calculation means 43 as a corrected flow rate pulse (step S43 and from time t2 to time t3). The counting calculation means 43 counts the pulses from the transmitting means 46 together with the pulses from the flow rate pulse transmitter 18, and when the oil supply amount becomes equal to the set integer oil supply amount (step S44), the comparison means 45 outputs a control signal. 2nd stage main valve 16
b is closed, and the fact that integer oil supply has been performed is stored in the preset storage means 38 (step S45 and time t4). Then, the nozzle valve of the refueling nozzle 6 is closed to finish refueling. In this way, in integer lubrication, lubrication begins when hydraulic pressure is applied to the hose and it swells, and lubrication ends when no hydraulic pressure is applied to the hose, so when the integer switch 9 is pressed and the first stage main valve 16a is closed, The amount of jumping is added after refueling is resumed.

E Nozzle rises from refueling position L to raised position H In Figure 4, after refueling, lift switch 1
When 0 is pressed (step S1), in this case, the refueling nozzle 6 is at the refueling position L (step S1).
S2), the control signal from the lift determining means 36 is stopped, the pump motor 13 is turned off, and the main valves 16a and 16b of the first and second stages are closed (step S11).
and time T4), the hose reel motor 3 is reversed and the refueling nozzle 6 is raised (step
S12). Next, when the motor 3 rises to the rising position H (step S13), the motor 3 is stopped and the control is ended.

〔Effect of the invention〕

As explained above, according to the present invention, the control device counts and stores the flow rate corresponding to the swelling of the hose, and counts the stored swelling amount to the preset amount to correct the jumping amount, so that the hydraulic pressure inside the hose increases. The correct value can be displayed at all times by correcting the condition to the same state as if refueling had finished in the swollen state.

[Brief explanation of the drawing]

Fig. 1 is an overall configuration diagram showing a refueling device embodying the present invention, Fig. 2 is a control block diagram, Fig. 3 is a functional block diagram of hose elevation and metering, and Fig. 4 is a control flowchart of hose elevation. , Figure 5 is a control flowchart for metering and counting, Figure 6 is a control timing chart for normal lubrication, Figure 7 is a functional block diagram for preset lubrication, Figure 8 is a control flowchart for preset lubrication, and Figure 9 is a control flowchart for preset lubrication. This figure is a control flowchart for integer oil supply, and FIG. 10 is a control timing chart for preset oil supply. 8...Preset switch, 9...Integer switch, 10...Elevation switch, 11...Nozzle position detector, 16a...1st stage main valve, 16b...2nd stage
Stage head valve, 20... oil supply indicator, 24... preset indicator, 30... control device, 42... storage means, 43... counting calculation means.

Claims (1)

[Claims] 1. A means for filling the hose with liquid before starting refueling,
A lubrication device having a preset lubrication means includes a storage means for storing a correction amount corresponding to the swelling of the hose from the start of pump drive until the display meter is reset after a predetermined time has elapsed, and a preset lubrication amount that is set at the time of preset lubrication. Comparing means sends a signal to a throttle means for reducing the amount of oil supply to a small amount when the value obtained by subtracting a predetermined value from the amount is reached, and a comparison means sends a stop signal to the oil supply stop means when the set amount of oil supply is reached; transmitting means for transmitting the correction amount stored in the storage means to a counting calculation means in response to a signal to throttle the oil supply outputted from the comparison means, the counting calculation means counting the flow rate and calculating the calculation result. A liquid supply device characterized in that the correction amount is added to the amount of correction.