JPS6264794A - 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 [Industrial Field of Application 1] The present invention relates to a liquid supply device capable of measuring the liquid level and displaying the amount of liquid supplied.

[Prior Art 1] As is well known, for example, a liquid supply device for supplying oil or the like to a car at a gas station is usually provided with a flow rate J1 on the downstream side of the pump to display the amount of liquid supplied. There is. This conventional flow 11 uses a piston cylinder device with a constant capacity, and measures the stroke of the screw 1 to display the amount of liquid supplied. Therefore, there is a problem in that wear or leakage in the piston cylinder device is displayed as a JI difference in the amount of liquid supplied.

In order to solve this problem, the present applicant has
No. 5598 proposes a liquid supply device that can measure MfM using a weight scale and display the amount of liquid supplied.

Although this device itself is effective, it requires conversion from liquid weight to liquid volume, and even if the liquid weight is the same, the liquid volume varies depending on the specific gravity, and the specific gravity of the liquid (oil in this case) depends on the preparation (e.g. Temperatures in summer and winter) and the manufacturing date of the liquid differ slightly, so it is not possible to display the exact amount of liquid supplied.

[Object of the Invention 1 Accordingly, an object of the present invention is to provide a liquid supply device q that can display an accurate amount of liquid supplied.

[Configuration 1 of the Invention The liquid supply device according to the present invention includes a liquid level gauge provided in an oil storage tank, and a liquid supply amount indicator that receives a signal from the liquid level gauge and displays the supply level.

[Effects of the invention] Therefore, since the output of the liquid level gauge is immediately converted to liquid volume,
It is possible to accurately display the liquid supply interval without requiring conversion correction from liquid weight to liquid m, which is required in conventional equipment.

[Preferred mode of implementation] When carrying out the present invention, it is preferable to use a capacitance type or a flow type type for liquid 4Ct correction.

In carrying out the present invention, it is preferable that the liquid level is placed in a novice tank for temporarily storing liquid, but it may also be installed in an underground tank.

[Example] A detailed description of the present invention will be given below in No. 1 with reference to the drawings.

FIG. 1 shows a refueling system embodying the present invention, in which a 1J-vis tank 2 is installed in a refueling station 1, g') (-J,
On the side of the service tank 2, there is a liquid level needle 4. In the illustrated embodiment, a capacitance ω type liquid (17i13 is 8Q C-j
It is being Therefore, the liquid level of the oil stored in the screw tank 2 is measured by the liquid level needle 3. On the other hand, a fuel supply pipe 5 extending from the underground tank 4
A first switching valve 6, a pump 7, and a second l/7 switching valve 8 are connected in a 1cf row, and the first switching valve 6 is connected to the lower part of the service tank 2 via a pipe 9. and the second switching valve 8 and 4''--the lower part of the screw dunk 2 is connected to the pipe 10.
are connected via. Furthermore, a pipe 11 from the second switching valve 8 is connected to a nozzle valve 12 via a hose 17.

In the figure, 13 is a switch that detects whether the nozzle is on or off.
Reference numeral 4 indicates an oil supply amount indicator, 15 indicates a residual liquid level indicator in the service tank, and 16 indicates a control device to be described later.

Next, the present invention will be explained in detail with reference to FIG.

First, when the car is not being refueled, the J oil pump 7 is activated by the control device 16 to suck oil from the underground tank 4 through the pipe 5 and the first switching valve 6, as will be described later. Oil is supplied from the second switching valve 8 to the service tank 2 through a pipe 10. and liquid level, FI-
3, the liquid level of the oil in the service tank 2 is measured, and the liquid level m
The liquid level signal No. 3 is converted into a liquid level by a liquid level conversion circuit 22, and is transmitted to a memory circuit 20, an arithmetic circuit 21, a residual liquid level indicator 15, and a management circuit 25 via a line 1-1. I'm crying like I'm being fucked.

To refuel an automobile, the nozzle valve 12 is turned on by a nozzle hook. Then, a signal indicating that the nozzle valve has been removed from the switch 13 is generated on the line 1-2, and this signal is transmitted from the input 1-21 to the memory circuit 20.
The previous memory of 0 is erased, and the liquid value according to the current liquid level of the liquid level needle 3 is stored in the memory circuit 20. Furthermore, line 122
G1 is opened by the signal from the arithmetic circuit 21
A fuel supply display signal from the fuel tank is transmitted to the fuel supply amount display meter 14. As described in Section 1, Section 4, when the nozzle is removed from the first nozzle, the oil supply amount display signal from the arithmetic circuit 21 is zero, and the oil supply amount display meter 14 displays zero. The signal from line L2 is also applied from line 1-23 to a first switching valve 6 which switches pipe 9 into communication with pump 7. Additionally, the signal from line 124 passes through gate G3 to provide an activation signal to pump 7. Furthermore, the signal from line L2 is transmitted via line L25 to a second switching valve 8, which is switched to allow oil from pump 7 to flow into pipe 11. Therefore, as soon as the nozzle valve 12 is removed from the nozzle hook, the pump 7 starts and the oil in the service tank 2 flows through the pipe 9, the first switching valve 6, the pump 7, the second switching valve 8, and the pipe 11 to the nozzle. It becomes possible to refuel from the valve 12, and zero is displayed on the refueling amount indicator 171I. When the nozzle valve 12 is opened and refueled, the number IITi (for example, 10,000
0cc) to the liquid level agent 3 to the liquid level conversion circuit 22
(For example, if the liquid level signal from the liquid level agent 3 is converted to a liquid volume by the liquid level conversion circuit 22 and the liquid level indicates 98576 cc, then the liquid level signal transmitted through the liquid level agent 3 is tightened sequentially.) -98576=1424 c c).

This subtracted signal from the arithmetic circuit 21 is displayed on the oil supply amount display meter 14 via the first gate G1 on line [4 (for example, 1.4212 with the third decimal place rounded down). Since the liquid level signal from liquid level ff+3 is constantly transmitted, the oil supply amount display meter is sequentially affected by the oil supply hl, for example (')
, the display can be changed to 01i2f7T.

Following step 1-J, the refueling work for the automobile is completed, and the nozzle valve 112 is moved to the nozzle I11. River () to fl,
A signal indicating that the nozzle valve is closed is generated from switch 13 to line 16, and the signal cj on line 12 becomes IK.

Therefore, when the pump 7 is stopped, the first switching valve 6, the second switching valve 6, and 8 are switched, and the first switching valve 6, the first switching valve 6, the pump 7, and the second switching valve are switched. A pipe line is configured to be sent to the J-vis tank 2 through the valve 8 and the pipe 10. In addition, when the games 1 to 1 are closed, the refueling display 14 is maintained as it is until the next nozzle is removed. The signal from the other line I6 is applied to gate G2, which opens gate G2. The liquid level in the 4J-vistank 2 is applied to the oil quantity management circuit 25 of the J-vistank via line 1-1, and this management circuit 25 indicates that the 1J-vistank 2 has a predetermined value (e.g. 600,000 C).
) When the liquid level reaches 27, a signal is sent to line ]-7,
A start signal is sent to the pump 7 via the gate 1-G2 and the line 1-8.

Therefore, when the refueling is finished, the nozzle is
When the first game 1 to G2 hear, the pump 7 is operated by a signal from the management circuit 25, and the service tank 2 is supplied with oil from the ground F tank 4. When the tank 2 becomes full (for example, 100,000 cc), the signal on the line 1-7 disappears and the pump 7 is stopped. Therefore, preparations for refueling the next car are completed.

Now, while refueling the car, the amount of fluid in the service tank 2 becomes close to zero. At that time, the management circuit 2
5, a signal appears on line L9.

Since the gate G3 is closed by this signal, the pump 7 is stopped and the refueling stop 1 occurs. For further refueling, by hooking the nozzle valve 12 to the nozzle hook 11, the service tank 2 is refilled with oil from the underground tank 4, and the vehicle can be refueled again.

[Summary] As described above, according to the present invention, the liquid level in the service tank 2 is measured and the amount of refueling is displayed using the liquid level, which is different from the conventional device that measures the volume by weight, and it is possible to convert the liquid amount from the weight. Accurately displays the amount of refueling without having to supplement the conversion φ.
can be done. Therefore, according to the present invention, it is possible to accurately display the amount of oil supplied over a long period of time.

[Brief Description of the Drawings] Fig. 1 shows an oil supply device embodying the present invention. l Schematic side view, Figure 2 shows an example of a control device implemented in the present invention.
It is a block diagram. 2...Service tank 3...Level gauge 4...Underground tank 6.8...Switching valve 7...Pump 1
6...Control device 22...Liquid level/volume conversion circuit -〇- Fig. 1

Claims (1)

[Claims] A liquid supply device comprising: a liquid level gauge provided in an oil storage tank; and a liquid supply quantity indicator that receives a signal from the liquid level gauge and displays the quantity of liquid supplied.