JPS5918279B2 - Kiyuyu Souchi - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a refueling device, in which the refueling device is inclined;
Alternatively, it is designed to prevent fuel oil such as gasoline from leaking outside when it falls over.

Refueling equipment generally uses a flexible tube to connect the pump to underground piping, and this is so that the buried position of the underground piping can be connected to the installation position of the refueling equipment.

In conventional refueling devices with such a configuration, if the refueling device falls down due to a collision with a vehicle, etc., the weak part of the flexible tube in the refueling device is cut, which causes the piping to become damaged. There was a risk that hazardous substances such as gasoline in the oil transmission system would leak out.

When such an accident occurs, there is a possibility that fuel oil such as gasoline may catch fire, which poses an unexpectedly high degree of danger.

The present invention has been made in view of this point.

One embodiment of the present invention will be described with reference to the drawings. In FIG. 1, 1 is a fuel supply device, and this fuel supply device 1 includes a pump chamber 3 whose upper part and other parts are buried in the ground surface 2. It consists of a box-shaped oil supply chamber 4 located above this pump chamber 3.

Inside the pump chamber 3, there is a pump 5, a motor 7 that supplies power to the pump 5 via a belt 6, and a motor 7 that operates when the pressure value on the discharge side (the upper part in the figure) of the pump 5 reaches a predetermined value. It houses a relief valve that returns fuel and oil from the discharge side to the suction side (lower part in the figure).

The suction side of the pump 5 is connected through a pipe 9 to a tank 10 buried underground.

11 is fuel oil such as gasoline. The interior of the oil supply section 4 houses a flowmeter 12 and a display 13 that digitally displays the flow rate passing through the flowmeter 12 based on an electrical measurement signal or a mechanical measurement signal generated by the flowmeter 12. There is.

14 and 15 are pipes, the lower end of which is connected to the discharge side of the pump 5 via a flexible tube 16 containing a valve mechanism to be described later, and the upper end is connected to the flow meter 12.

The lower end of the pipe 15 communicates with the outlet side of the flow meter 12, and the upper end communicates with the base of a refueling hose 170 opened on the side surface of the upper end of the refueling section 14.

A refueling nozzle 18 is attached to the tip of the refueling hose 17.

What is shown in FIG. 2 is an embodiment that is slightly more equipped than that shown in FIG. 1, so the same members as those in FIG. A portion is raised to form an island 2', and a pump chamber is formed within this island 2'.

Other than that, there is no difference from the one in Figure 1.

Next, details of the valve mechanism will be explained with reference to FIG.

This valve mechanism 19 has a symmetrical top and bottom end.

That is, a flexible tube 16 is arranged in the center, and inner joints 21, 21' are integrally attached to both ends of the flexible tube 16.

The inner joints 21, 21' are made of packing material 22,
They are screwed onto outer joints 23 and 23' via 22', respectively.

Note that 20°2σ in the figure is the opening of the outer joint 23, 23'.

The outer joints 23 and 23' each have a bearing 2 therein.
4 and 24' have valve bodies 26° and 26' at their tips, respectively.
The valve stems 27, 27' with attached valves are slidably inserted therein.

Springs 28 and 2B' are interposed between the outer joint 23 and the valve body 26, and between the outer joint 23' and the valve body 26', respectively. I am assisted.

The valve mechanism 19 configured in this way has an outer joint 23,
The part 23' will be installed between the pipe 14 and the pump 5 in FIGS.
When the valve bodies 26 and 26' are in the normal upright position, the valve bodies 26 and 26' are pushed against the springs 28 and 28' against the valve seats 24 and 28', as shown in FIG.
24', so that the valve stems 27, 27'
Adjust the length.

Now, when the fuel supply devices 1 and 1' operate normally, the fuel oil 11 in the tank 10 is sucked up by the pump 5, and the fuel oil 11 in the tank 10 is sucked up by the pipe 9, the pump 5, the outer joint 23', and the inner joint 21.
', the flexible tube 16, the inner joint 21, the outer joint 23, and the pipe 14 to flow to the flow meter 12.

From the flowmeter 12 onward, the flow proceeds in the following order: pipe 15, oil supply hose 17, and oil supply nozzle 18.

If a vehicle or the like collides with the refueling devices 1, 1' and the refueling devices 1, 1' are tilted significantly or knocked down, the refueling devices 1, 1' will fall with the lower part centered. At this time, since the weakest part in terms of strength in the piping system in the oil supply devices 1, 1' is the flexible tube 16, it will break when the flexible tube 16 is fully extended.

FIG. 4 shows this state. In this case, the distance between the outer joints 23, 23' is larger than in the normal state, so the valve stems 27, 2γ are separated and the springs 28, 28' close the valve. The valve body 26, 26' being pushed in the direction of the valve seat 25,
25', the pump 5 and the pipe 14 are cut off.

Therefore, fuel oil will not leak from the broken portion of the flexible tube 16.

In this case, the motor 7 will continue to operate unless the power is turned off, so the fuel oil 11 in the tank 10 will be sucked up, but since the discharge side of the pump 5 is blocked by the valve body 26', the pressure will increase. As a result, the relief valve 8 operates, and the water circulates in this area, preventing leakage to the outside.

, FIG. 5 shows another embodiment of the valve mechanism, and the third tooth and the same parts as the valve mechanism shown in FIG.

This embodiment differs from the previous embodiment in that the valve stem 27,
This is because contact plates 29, 29' are provided on the contact surface of 27'.

These contact plates 29, 29' are connected to the oil supply apparatus 1 or 1' and the pipe 9 which is underground piping when the oil supply apparatus 1 or 1' is installed.
This is provided to absorb the misalignment between the valve stems 27 and 27', thereby improving the degree of freedom in the work to align the respective axes of the valve stems 27 and 27'.

FIGS. 6 to 9 show oil supply devices in which other modifications of the valve mechanism 19 or 19' described above are described.

The same parts as those of the above-mentioned oil supply device 1 or 1' are given the same numbers and the explanation will be omitted.

In FIG. 6, reference numeral 101 denotes a main body of the refueling device, and the refueling device 101 is installed on an island χ provided at a refueling location.

A pump 5 driven by a motor 7 is housed in the oil supply device 101, and the pump 5 is provided with the above-mentioned relief valve 8, and its discharge side is connected to the pump 14, and its suction side consists of a modified example described later. It communicates with the pipe 9 via a valve mechanism 119.

FIG. 7 shows a modification of the valve mechanism 19 shown in FIG. 3, and the same parts are denoted by the same numbers and the explanation will be omitted.

The outer fitting 23 is connected to the pump 5 and the outer fitting 23' is connected to the pipe 9.

In this modification, the only valve is the valve 26 on the joint 23 side, and the valve mechanism on the joint 23' side is removed.

The valve stem 27' is fixed to the bearing 24' and is connected to the valve mechanism 19 described above.
Similarly, it comes into contact with the valve stem 27.

The valve mechanism 219 shown in FIG. 8 is a modification of the valve mechanism 119 of the embodiment shown in FIG. 24
′.

The valve mechanism 319 shown in FIG. 9 is a modification of the valve mechanism 119 of the embodiment shown in FIG. , which aims to achieve the same effect as the embodiment shown in FIG.

To briefly describe the operation of the valve mechanism shown in FIGS. 6 to 9 above, when the flexible tube 16 is deformed, elongated, or broken due to tilting, collapse, etc. of the oil supply device 101, the valve 26 is moved by the spring 28. The valve is urged to sit on the valve seat 25 and shut off the piping system.

As a result, the oil remaining in the piping system within the oil supply device will not flow out, and the oil that was sucked up into the pipe 9 will fall into the tank 10.

′, ゛As described above, in the present invention, a valve mechanism is interposed in the oil supply system between the pump chamber and the oil supply side to close the yarn path when these are separated, so that the oil supply system is not tilted. This has the effect of preventing dangerous fuel oil, such as gasoline, from leaking outside in the event of a fall.

[Brief explanation of the drawing]

Figure 1 is a front view schematically showing an embodiment of the present invention, Figure 2 is a front view schematically showing an embodiment of the present invention.
The figure is a schematic front view of an embodiment different from that shown in FIG. 1, FIG. 3 is an enlarged sectional view showing the main parts of the present invention, FIG. FIG. 5 is an enlarged cross-sectional view of main parts of another embodiment of the present invention, and FIG. 6 is a diagram showing FIGS. 1 and 2.
FIG. 1 is a cross-sectional view of a modified example of the embodiment shown in FIG. 3, and FIGS.
FIG. 3 is a cross-sectional view of a modification of the one shown in the figure. Ll', 101... Oil supply device, 7...
Table, 3...Pump chamber, 4...Oil supply section,'6...Pump, 7...Motor,'
8... Relief valve, 9, 14, 15...
・Pipe, 10...tank, 11...
Fuel oil, 12...Flowmeter, 13...Display device, 1'6...Flexible tube, 17...Refueling hose, 19, 19' , 119°219.319...
...Valve mechanism, 21, 21'...Inner joint,
23, 23'...Outside joint, 25, 25'...
... Valve seat, 26, 26'... Valve body, 27
, 27'...Valve stem.

Claims (1)

[Claims] 1. When the piping system of a refueling system and a pipe communicating with an underground tank are connected via a flexible pipe having a valve mechanism, and the piping system of the refueling system and the end of the pipe are separated or do not align in a straight line, A refueling device characterized in that a valve mechanism closes when a flexible pipe is deformed, elongated or destroyed, thereby blocking a piping system.