JPS63125195A - Lubricating device - 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 an oil supply device that is capable of detecting the type of oil and is not able to supply oil if the type of oil differs.

With refueling devices used at general gas stations, the refueling pump is automatically activated when a refueling worker removes the refueling nozzle from the refueling device. Refueling [Refueling is possible by inserting it into the box. However, in this case, the type of oil that can be refueled is limited to the underground tank pumped up by the refueling pump of the refueling system, and in order to refuel the vehicle with the oil it needs, it is necessary to Oil pumped from an underground tank of 1-ft. of oil must be used. Therefore, in the past, refueling workers have had the disadvantage of causing trouble due to mistakes such as, for example, erroneously refueling a vehicle that requires gasoline with diesel oil, or refueling a truck that requires diesel oil with gasoline.

The present invention has been made to solve the above problems, and its purpose is to automatically detect the type of oil in the vehicle and prevent refueling if the type of oil is different. It is an object of the present invention to provide a refueling device with a To achieve this purpose, a sensor is provided at the tip of the oil supply nozzle to detect the type of oil, and a control circuit is provided that prevents oil supply if the type of oil differs depending on the signal from the sensor.

An embodiment of the present invention will be described below based on the drawings.

In FIG. 1, the refueling device 1 removes the refueling nozzle 4 from the refueling nozzle hook 3 provided on the side of the frame 2, and when the refueling nozzle 4 is inserted into the refueling port 6 of the vehicle 5, the liquid type detection sensor 7, the fuel pump 8 continues to be driven and becomes ready for refueling only when the liquid type of the oil used in the vehicle 5 and the oil in the refueling nozzle 4 match.

The liquid type detection sensor 7 is built in the tip of the tube 9 fixed to the tip of the refueling nozzle 4, as shown in FIGS. 2, 3(a), and 3(bl). In this case, a light emitting diode and a phototransistor are used.

In FIG. 3(al) and FIG. 3(b), tube 9
An inner tube 10 concentric with the tube 9 has an insulator 11 at its tip.
．． It is fixed by 12. Two opposing glass windows 13a and 13b are provided in the diametrical direction of the inner tube 10. A light emitting diode 14 is built inside the insulator 11 facing the glass window 13a, and a phototransistor 15 is built inside the insulator 12 facing the glass window 13b. ,1
The light passes straight through 3b, is received by the phototransistor 15, and is converted into electrical energy.

Here, when the tube 9 is inserted into the oil liquid in the oil tank, the inside and outside of the inner tube 10 are filled with oil liquid, and the light emitting diode 1
4 passes through the oil liquid in the tube 10 from the glass window 13a, passes straight through the glass window 13b, and reaches the phototransistor 1.
5, the light is received and converted into electrical energy. The amount of light transmitted by the light emitted from the light emitting diode 14 through the oil in the tube 10 varies depending on whether it is gasoline or diesel oil. For example, when the oil liquid is gasoline, the amount of light transmission is Δ■ (because gasoline is colored)! The amount of light transmitted through l oil is ΔV + Δ■' (because diesel oil is almost colorless), and the electric signal of the phototransistor 15 that receives the light emission signal from the light emitting diode 14 is the amount of light transmitted through gasoline ΔV and the amount of light transmitted through light oil Δ ■10ΔV.

Electrical energy of strength and weakness is output in proportion to.

In FIG. 4, the electric signal from the phototransistor 15 is compared by the comparator 16 with the electric signal Δ■ using gasoline as a standard liquid and the electric signal Δ■+Δ■゛ of light oil, and the electric energy of both is compared. The difference Δ■' is the comparator 16
is detected, the relay 18 is activated, and the relay contact 19 is activated.
(The contact 19 is normally in the ON state). Similarly, even when light oil is used as the standard liquid, the comparator 16 detects the difference in electrical energy ΔV°, and the relay 18 is activated to turn off the relay contact 19 of the main power source. On the contrary, if the signal from the comparison fl16 indicates the same liquid type, the relay 18 will not operate and the relay contact 19 of the main power supply will remain in the ON state. The oil pumped up from the underground tank 22 (containing the oil) passes through a flow meter 23, piping 24, and a fuel hose 25, and reaches the fuel nozzle 4. When the refueling operator pulls the nozzle lever 26 of the refueling nozzle 4, the nozzle 4 opens and can supply refueling into the refueling port 6. Furthermore, the fourth
In the figure, a barrier 17 is provided between the phototransistor 15 and the comparator 16, and this barrier 17 is for intrinsically safe explosion-proof use. In addition, a comparator 16,
The relay 18 constitutes a control circuit. Furthermore, although not shown, the electric energy of the light emitting diode 14 is also transferred to the barrier 17.
Supplied from.

With the above structure, when the refueling nozzle 4 is inserted into the refueling port of the vehicle 5 and the liquid type detection sensor 7 is inserted into the oil liquid in the oil tank, the liquid type of the oil in the oil tank and the refueling are detected. If the comparator 16 determines that the type of liquid in the nozzle 4 is the same, the relay 18 will not operate, and the relay contact 19 of the main power source will be in the ON state, allowing refueling. On the other hand, if the liquid type of oil in the vehicle 5 and the liquid type in the oil metering IJ12 are different, a mismatch signal is output from the comparator 16, the relay 18 is activated, and the relay contact 1 of the main power supply is output.
9 is OFF, even if the refueling operator grips the nozzle lever 26 of the refueling nozzle 4, refueling is not performed.

After refueling, release the nozzle lever 26 and close the refueling nozzle 4.
When the fuel supply nozzle 4 is pulled out from the fuel supply port 6 and hung on the nozzle hook 3, the main power switch 20 is turned off and the drive motor 21 of the fuel pump 8 is stopped.

In the above embodiments, the refueling device is of a ground-mounted type, but it is not limited to this, and a so-called ceiling-suspended type, in which the refueling nozzle is suspended from the ceiling of the refueling station so that it can be raised and lowered, may be used. It may also be a configuration. Also, relay 1
Although 8 is a normally closed contact, it may be a normally closed contact, and in this case, the pump 8 is activated when refueling becomes possible.

In this manner, the refueling apparatus of the present invention prevents a! ! ItQ
Since the system can automatically prevent oil leakage, even inexperienced workers can perform quick and accurate refueling work.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram showing one embodiment of the oil supply device according to the present invention, FIG. 2 is a side view of one embodiment of the fuel supply nozzle portion thereof, and FIG. 3(a) is a portion A shown in FIG. FIG. 3 is an enlarged cross-sectional view of FIG. -Refueling nozzle hook 4-
Refueling nozzle 5-Vehicle 6-Refueling lower liquid type detection sensor 8-Refueling pump 9-Tube 10-Inner pipe 11.12-Insulator 1
3a, 13b-Glass window 14-Light emitting diode 15
・～・Phototransistor 16...-Comparator 17-Barrier 18--Relay 19- Relay contact 20-Main power switch 7chi 21--Motor 22--Underground tank 23-Flow? Total 24--Piping 25-Refueling hose 2
6.--Nozzle lever

Claims (1)

[Claims] A refueling device that is equipped with a sensor that detects the type of oil at the tip of a nozzle, and a control circuit that prevents refueling if the type of oil differs depending on the signal from the sensor.