JPS5962496A - Liquid feeder - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a liquid supply system having the function of program inspection of a liquid supply system and operation inspection of each device such as a control valve and an indicator, and particularly relates to a liquid supply system for oil depots commonly called depots. This relates to a liquid supply device that can be inspected without actually flowing oil.

Generally, program inspections of liquid supply systems and control valves, display meters, etc. at oil depots are carried out. ′ when inspecting instruments,
They actually poured oil and tested it. Therefore, in order to flow a predetermined amount of oil, it is necessary to park the rower on the side of the rack and insert the loading arm into the oil filler port, just like when refueling, which makes the work cumbersome. be.

Generally, a flow meter is equipped with a pulse transmitter, which converts the flow into a pulse signal and displays it on a display meter via a control device. The present invention was devised in view of this point, and its purpose is to provide a fluid supply device for oil depots that allows equipment to be inspected without actually draining oil.

According to the present invention, in a liquid supply device configured such that a liquid supply amount is set by a preset signal, a control valve is opened by a liquid supply start signal, and the control valve is closed when a flow rate pulse from a flowmeter reaches a set value. , a pseudo pulse generating means and a check signal generating means, and a switching means for receiving the check signal to disable the input of the flow rate pulse from the flow meter and to enable the input of the pseudo flow pulse signal. With this configuration, the system program and other equipment perform operations similar to actually flowing oil using pseudo pulses, so it is possible to inspect the operation without causing oil to flow.
can be done.

The present invention will be described in detail below with reference to the drawings.

FIG. 1 shows an oil depot in which the present invention is implemented, and FIG. 2 shows a block diagram of A. In the J rack indicated by reference numeral 1 in FIG. 1, a plurality (three in the illustrated embodiment) of liquid supply devices 2a
12b and 2C are installed. Each liquid supply device 2a
, 2b, and 2c have different oil types, for example, the liquid supply device 2a supplies high octane gasoline, and the liquid supply device 2b supplies Reggie slur gasoline, and the liquid supply device 2C supplies diesel oil. Each liquid supply device 2a12b12c (hereinafter abbreviated as 2) has a similar configuration. The lower side of the rack plate 3 is provided with a control valve (not shown), a flow meter, and a computer for the liquid supply device 2, that is, a control device 7, and the upper side of the rack plate 3 is provided with a loading arm 8a.
, 8b, 8G (hereinafter abbreviated as 8) and data displays 11a, 11b, 11C (hereinafter abbreviated as 11).

Each loading arm 8 is connected to a respective oil type piping 16 via a control valve and a flow meter (not shown), and the pump 1
7 to an oil storage tank 18 (only one type of oil is shown in FIG. 1).

In addition, the case 20 provided on the rack board 3 is a card reader 2.
A computer or control device 7 is provided for the ground wire 1 and the ground wire 23.

A plurality of such racks 1 are installed at an oil depot.

An office 25 is established in a position far away from the rack 1, and a data input/output device 26 is installed in the office 25. 7.29 is connected by a signal line 27, and information is transmitted through serial communication.

In FIG. 1, SWr and SW2 are respectively a starting switch and oil amount selection/setting switch provided on the loading arm 8, and 4 is a hand valve. Also, 28 is a low roller. In order to carry out normal liquid supply work at such an oil depot, a specific node number is given in advance to the driver of each lorry 28. The card contains information such as the vehicle number, oil depot code, and expiration date. The clerk looks at the oil distribution slip, operates the data input/output device 26, and inputs the type of oil to be supplied, liquid supply n1, etc. The lorry driver receives a liquid distribution slip from office 25, goes to rack 1, and first grounds it with ground wire 23. This signal indicating that the grounding has been done is sent from the computer 29 in the case 20 to the computer for liquid supply control, that is, the control device 7 (FIG. 2). will be displayed where indicated. Next, when the card is read by the card reader 21, the signal is transmitted to the computer or secondary computer via the signal line 27 for the liquid distribution (liquid supply) data for that car number stored in the data input/output device 26 in the office 25. m device 7.

The driver inserts a predetermined loading arm 8 into a predetermined 5-hatch, selects the oil amount with the setting switch SW2, and then presses the start switch SW1. Then control T
A signal from the l device 7 opens the control valve 5, an indication that the liquid is being supplied is given, and the pump 17 sends oil to the loading arm 8. Then, when the driver closes the hand valve 4, the liquid is supplied. During this time, a pulse signal from the flow meter 6 is sent to the control device 7, and the liquid supply port is displayed on the display meter of the display 11. When the set amount of oil is filled in this way, the signal from the control device 7 sends a control signal. The valve 5 closes and the liquid supply indication on the display 11 disappears.

As described above, when all preset oil types have been supplied in sequence, a liquid supply slip is printed from the data input/output device 26 in the office 25. When the refueling work is completed, the driver disconnects the ground connector 23 and leaves the vehicle.

In such oil depots, each piece of equipment must be inspected at the time of installation and at regular intervals, such as once a year. According to the prior art, the same operations as described above have to be carried out.

6- Therefore, according to the invention, a switch 5 emitting a check signal
Ws (FIG. 2) is provided. This switch SW
3 is a place that is difficult to operate, for example, a lid is provided on the storage case 40 of the ili control device 7, and the device is placed inside the lid to prevent careless operation.

When this check switch SW3 is operated, a check signal is generated, and instead of the pulse from the flow meter 6, a pseudo pulse from a pseudo pulse generating means 30 provided in the control device 7 is used as an argument.

FIG. 3 shows a control device implementing the invention.

The signal from the check switch SW3 is sent to the switching means 31.
sent to. This switching means 31 normally sends a flow rate pulse signal from the flow meter 16 to the counting circuit 32, but when it receives a check signal from the check switch SWs, it inputs a flow rate pulse signal from the flow meter 6. is disabled, and the pseudo flow rate pulse signal from the pulse oscillator 30 is allowed to be input.Therefore, when the check switch SW3 is pressed, the pulse signal from the pseudo pulse generating means 30 is sent to the counting circuit 32. . Note that this pseudo pulse generating means 30 can utilize a control device, that is, an oscillator of a computer.

Since oil will not flow during inspection work, keep the hand valve 4 closed, turn on the check switch SW3, then connect the ground as described above, read the card with the card reader, and the total preset amount storage circuit 31 ! The total preset amount is stored in 1 from the data input/output device 26 via a line 27. Then, a preset amount such as 2 k12 is stored in the preset circuit 33 by the selection switch SW2.

When the start switch S W t is pressed, the signal activates the pseudo pulse generating means 30 via the switching means 31 and is transmitted to the preset circuit 33, and the control valve 5 is opened by the signal from the preset circuit.

However, since the hand valve is closed, oil is not supplied. The pulse signal from the pseudo pulse generating means 30 is counted by the counting circuit 32, and the flow rate corresponding to the pulse signal is displayed on the display meter 11, and at the same time, the preset circuit 33 performs depletion from the preset amount stored, and the remaining amount is determined. When it becomes zero, the control valve 5 closes and the pulse also stops. The display meter 11 shows the flow rate at that time.

If you press the check switch as described above, except for the fact that oil does not flow, the other operations are the same as when oil was flushed. It can be checked whether the function is normal or not.

Therefore, according to the present invention, each device or system can be inspected without actually draining oil, and the time and effort required for inspection can be significantly reduced. In addition, simply providing the switching means 31 and the check switch SW3, the pseudo pulse generating means 3
0 can also be used for computers, so it is inexpensive and its effects are extremely large.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing a liquid supply station implementing the present invention, FIG. 2 is a block diagram showing a control circuit implementing the present invention, and FIG.
The figure is a block diagram showing an embodiment of the present invention. 9- 5...Control valve 6...Flow meter 11...Display meter Swl...Start switch SW2...
Selection switch SW3...Check switch
7... Control device (computer) 30... Pseudo pulse generation means 31... Switching means 32... Counting circuit 33... Preset circuit 10-

Claims (1)

[Claims] In a liquid supply device configured so that the liquid supply amount is set by a preset signal, the control valve opens by a liquid supply start signal, and the control valve closes when the flow rate pulse from the flow meter reaches the set value, check with the pseudo pulse generation means. 1. A fluid supply device comprising a signal transmitting means, and a switching means for disabling the input of a flow rate pulse signal from a flow meter and enabling the input of a pseudo hot stone pulse signal upon receiving a check signal.