JP2003104499A - Fueling apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fueling apparatus with which fuel oil comprising two liquids mixed at a predetermined blend ratio can be fed with a simple structure. SOLUTION: The fueling apparatus includes a piping system having an oil feed pump 27 for feeding first and second fuel oils respectively, a flowmeter 28 for counting a flow rate of a mixed liquid comprising the first and second oils fed by the pump, and an oil feed hose 12 connected with a discharging port side of the flowmeter 28 and having a pump nozzle 13 at its tip. A hydraulic chamber 33 into which the first and second oils flow respectively is provided on a piping system on a discharging side of the oil feed pump 27. A valve mechanism for varying a discharged amount according to the hydraulic pressure of each of the fuel oils in the chamber 33 is provided. In addition, a mixing control valve 30 equipped with a mixing chamber 34 for mixing the first and second oils discharged via the valve mechanism is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil supply device for mixing two liquids at a constant ratio and supplying the two liquids as fuel oil to an automobile.

[0002]

2. Description of the Related Art Conventionally, as an apparatus for supplying fuel oil to an automobile, there is, for example, an oil supply apparatus for mixing two liquids of high octane gasoline and regular gasoline at a predetermined ratio and supplying them. This type of oil supply device is provided with a flow control valve in the middle of a pipe for supplying the fuel oil before mixing according to the set blending ratio which is the mixing ratio of the two liquids, and the opening / closing control is performed to perform the blending ratio. Was maintained.

[0003]

However, in the conventional oil supply apparatus for mixing two liquids, the control of the flow rate control valve provided in the middle of the pipe for supplying the respective fuel oils is controlled by the instantaneous flow rate or the rotation speed of the oil supply pump, etc. Since it is performed by detecting, the configuration is complicated, the cost is high, and there is a fear that the device is easily damaged.

The present invention has been made in view of the above circumstances.
An object of the present invention is to provide an oil supply device capable of supplying fuel oil in which two liquids are mixed with a preset blending ratio with a simple configuration.

[0005]

In order to achieve the above object, in the invention according to claim 1, an oil supply pump for supplying the first and second fuel oils respectively, and an oil supply pump for supplying the fuel oil are supplied. And a flow meter for counting the flow rate of the liquid in which the first and second fuel oils are mixed, and connected to the discharge port side of this flow meter,
In an oil supply device including a piping system having an oil supply hose having an oil supply nozzle at a tip thereof, a hydraulic system into which a first fuel oil and a second fuel oil respectively flow is provided in a discharge side piping system of the oil supply pump, A valve mechanism that changes the discharge amount according to the liquid pressure of each fuel oil in the hydraulic chamber is provided, and a mixing chamber that mixes the first and second fuel oil discharged through the valve mechanism is provided. The mixing control valve provided is arranged. By arranging the mixing control valve provided with the valve mechanism that changes the discharge amount according to the hydraulic pressure in the discharge side piping system of the oil supply pump, it is possible to maintain the preset blend ratio with a simple configuration.

According to a second aspect of the present invention, the hydraulic chambers are partitioned and formed by pistons so that the first and second fuel oils flow into the hydraulic chambers. The flow passage is provided with a valve body that constitutes the valve mechanism that interlocks with the piston.
The valve body can maintain a predetermined blend ratio in the flow passage area according to the fluctuations in the hydraulic pressure of the first and second fuel oils.

According to the third aspect of the present invention, a stopper is provided near the valve body so that the valve body is not completely closed. The stopper does not completely close the valve element, and even if there is a large temporary fluctuation in hydraulic pressure, the blend ratio is not adversely affected.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be specifically described below with reference to an embodiment shown in the drawings. 1 to 3 are views for explaining an oil supply device according to a first embodiment of the present invention, FIG. 1 is a sectional view for explaining the configuration of a mixing control valve, FIG. 2 is a front view of the oil supply device, and FIG. 3 is an oil supply device. It is a figure explaining the piping system of.

In these drawings, the refueling apparatus 10 of the present embodiment operates, for example, either regular gasoline, high-octane gasoline, or fuel oil obtained by mixing these at a predetermined blend ratio from the front side and the back side. It is a ground-based device that can be refueled. As shown in FIG. 2, the refueling device 10 includes a main body case 11, a lower equipment case 11a, a refueling pump that constitutes a refueling mechanism for each oil type, a flow meter having a pulse transmitter, and the like. Is stored. The upper part of the device case 11a of the main body case 11 is formed in the display case 11b, and the display panel 15 is provided on the operation surface on the front side and the back side thereof. Further, the main body case 11 is provided with columns 11d and 11d on the left and right of the device case 11a and the display case 11b, and the tops of these columns 11d and 11d are formed into the top case 11c. Refueling hoses 12 of the respective oil types connected to the nozzles 13 are suspended. The refueling nozzle 13 is the equipment case 11a.
It is adapted to be hung on the nozzle hooks 14 provided on the front and the back. The display panel 15 provided on the front and rear operation surfaces of the display case 11b has
A fuel supply amount indicator 16 and a "H", "B", and "R" oil type selection button 17 for selecting high octane gasoline, blended oil, and regular gasoline are attached to the lower portion thereof.

As shown in FIG. 3, the piping system of the fuel supply system 10 includes a first piping system 18 for supplying high-octane gasoline, which is the first fuel oil, and a regular gasoline, which is the second fuel oil. A second piping system 19 for supplying
And a third piping system 20 for supplying the blended oil. The first piping system 18 includes flowmeters 22a, 22b and valves 23a, 2 halfway from a discharge port of a fuel pump 21 for sucking high-octane gasoline stored in an underground tank.
It is branched to the front side and the back side via 3b and connected to the fueling hoses 12 and 12, respectively. The second piping system 19 is branched from the discharge port of the refueling pump 24 that sucks the regular gasoline stored in the underground tank to the front side and the back side via flowmeters 25a and 25b and valves 26a and 27b, respectively. Refueling hose 1
2, 12 are connected. In addition, the third piping system 19
Is a mixing control valve 30, 30 and a flow meter 28 from the outlets of the fuel pump 27a for sucking the high-octane gasoline stored in the underground tank and the fuel pump 27b for sucking the regular gasoline stored in the underground tank.
It is branched to the front side and the back side via a and 28b and valves 29a and 29b, and is connected to the oil supply hoses 12 and 12, respectively.

The mixing control valve 30 includes a fluid pressure chamber 33 defined by a piston 36 inside a valve body 31 formed in a container shape.
And a mixing chamber 34 is provided adjacent to the hydraulic chamber 33. Further, the valve body 31 has a first inlet 32a into which high-octane gasoline, which is the first fuel oil supplied from the oil supply pump 27a, flows, and a regular fuel oil, which is second fuel oil supplied from the oil supply pump 27b. An inlet 32b into which gasoline flows is formed, the first inlet 32a communicates with one of the partitioned hydraulic chambers 33, and the second inlet 32b communicates with the other of the partitioned hydraulic chambers 33. Has been done. The partitioned hydraulic chambers 33 are provided with flow passages 33a and 33b which communicate with the mixing chamber 34, respectively, and a valve mechanism that works with the piston 36 is provided in these flow passages 33a and 33b. That is, the piston 3
6 is provided so as to be movable according to the hydraulic pressure of the partitioned hydraulic chamber 33, a rod 37 is attached to this piston 36 along the moving direction, and both ends of this rod 37 are provided with flow passages 33a, Valve body 38 for changing the flow passage area of 33b
a and 38b are attached. Each valve body 38
Springs a and b for providing a biasing force in the direction of the piston 36 are provided on a and 38b. Further, stoppers 40a and 40b are provided near the valve bodies 38a and 38b so as not to be completely closed. Mixing chamber 34
Are valve bodies 38a, 38b provided in the flow passages 33a, 33b.
Is a room in which high-octane gasoline and regular gasoline, which are the first and second fuel oils that flow in with the flow path limited, are mixed, and this mixed liquid flows out and one flow that communicates with the flowmeter 28a (or 28b). An outlet 35 is formed.

Next, the operation of the oil supply apparatus 10 having the above structure will be described. First, when refueling the blended oil, the "B" button of the oil type selection button 17 provided on the display panel 16 on the front side (or back side) of the main body case 11 is pressed and the corresponding refueling nozzle Select 13. As a result, the oil supply pumps 27a and 27b of the third piping system 20 are driven to enable oil supply. Each refueling pump 2
High-octane gasoline and regular gasoline, which are the first and second fuel oils supplied by 7a and 27b, are mixed while the flow rate is controlled through the mixing control valve 30,
Flow meter 28a (or 28b), valve 29a (or 29
b) The oil is discharged from the oil supply nozzle 13 through the oil supply hose 12. In the mixing control valve 30, the first and second fuel oils flow into corresponding partitioned hydraulic pressure chambers 33, and when the hydraulic pressure of one fuel oil is higher than the other, the piston 3
7 from the high hydraulic pressure side to the low hydraulic pressure side springs 39a, 3
9b, the hydraulic chamber 33 is moved, and the rod 3
The flow passage area changes as the valve elements 38a, 38b move through the valve 7. That is, the valve bodies 38a and 38b operate such that the high fluid pressure side narrows the flow passage area and the low fluid pressure side widens the flow passage area, whereby the fluid pressure fluctuations of the first and second fuel oils. Accordingly, the flow path area operates so as to maintain a predetermined blend ratio. Further, the valve bodies 38a and 38b are not completely closed by the stoppers 40a and 40b even if the hydraulic pressure fluctuates, and the blend ratio is not adversely affected even if the temporary large hydraulic pressure fluctuates.

In the oil supply device 10 having the above-described structure, the hydraulic chamber 33 defined by the piston 36 into which the respective fuel oils flow into the discharge side of the oil supply pumps for supplying the first and second fuel oils.
Is provided, and the valve bodies 38a, 3 that interlock with the piston 36 via the rod 37 in the flow passages 33a, 33b of the hydraulic chamber 33.
8b is provided, and a mixing chamber 34 that communicates with the flow passages 33a and 33b is provided. In the hydraulic chamber 33, the valve bodies 38a and 38b are connected to the flow passages 33a in accordance with pressure fluctuations of the first and second fuel oils. , 33b are changed so that the blend ratio becomes constant, so that the fuel oil in which the two liquids are mixed at the preset blend ratio can be supplied with a simple structure. Further, since the valve bodies 38a, 38b are not completely closed by the stoppers 40a, 40b, the blend ratio is not adversely affected even if there is a large temporary fluctuation in hydraulic pressure. Furthermore, by supplying branded oil, it is possible to increase sales of high-priced fuel oil.

FIG. 4 is a view for explaining the piping system of the oil supply system according to the second embodiment of the present invention. The parts and members corresponding to those in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

The piping system of the oil supply system of this embodiment has the same first and second piping systems 18 and 19 as the first embodiment.
The third piping system 50 for blending is provided with the flowmeters 51 and 52 for confirmation and the mixing flowmeters 51 and 52 on the way from the discharge ports of the fuel pump 21 for sucking high-octane gasoline and the fuel pump 24 for sucking regular gasoline. Control valve 3
0, 30, flow meters 28a, 28b and valves 29a, 29b
Is branched to the front side and the back side via the, and connected to the refueling hoses 12, 12, respectively. That is, in the third piping system 50, the oil supply pumps 21 and 24 of the first and second piping systems are shared, and the flowmeter 51 for confirmation is provided on the way.
52 is provided, and other configurations are similar to those of the first embodiment.

In the oil supply apparatus having the above structure, the oil supply pumps 21 and 24 for supplying the first and second fuel oils independently serve as pumps for supplying the blended oil, so that the equipment cost can be reduced. . In addition, the flow meter 5 for confirmation
By providing Nos. 1 and 52, it is possible to know the supply amount of each fuel oil.

In each of the above embodiments, the first and second fuel oils have been described by taking high-octane gasoline and regular gasoline as an example, but the present invention is not limited to this and can be applied to any two liquids to be mixed and refueled. be able to. Further, the mixing control valve 30 includes valve bodies 38a and 38b, springs 40a and 40b, or flow passages 33a and 33b, which form a valve mechanism.
It is possible to set an arbitrary blending ratio by changing, and the shape is not limited to the embodiment.

[0018]

As described above, in the oil supply system of the present invention, the oil supply pumps for supplying the first and second fuel oils, respectively, and the first and second fuel oils supplied by the oil supply pumps are mixed. In a refueling device having a flow meter for counting the flow rate of liquid and a piping system having a refueling hose connected to the discharge port side of this flow meter and having a refueling nozzle at the tip, a piping system on the discharge side of the refueling pump is , A hydraulic chamber into which the first and second fuel oils respectively flow is provided, and a valve mechanism that changes the discharge amount according to the hydraulic pressure of each fuel oil in the hydraulic chambers is provided. First and second discharged
By arranging the mixing control valve provided with the mixing chamber for mixing the fuel oil, the preset blending ratio can be maintained with a simple configuration.

[Brief description of drawings]

FIG. 1 is a sectional view illustrating a configuration of a mixing control valve according to a first embodiment of the present invention.

FIG. 2 is a front view of the oil supply device according to the first embodiment of the present invention.

FIG. 3 is a diagram illustrating a piping system of the oil supply device according to the first embodiment of the present invention.

FIG. 4 is a diagram illustrating a piping system of an oil supply device according to a second embodiment of the present invention.

[Explanation of symbols]

10 Refueling device 11 body case 11a Equipment case 11b Display case 11c top case 11d prop 12 Refueling hose 13 Refueling nozzle 14 nozzles 15 Display panel 16 Refueling amount display 17 Oil type selection button 18 First piping system 19 Second piping system 20 Third piping system 21 Oil pump 22a, 22b Flowmeter 23a, 23b valve 24 Refueling pump 25a, 25b Flowmeter 26a, 26b valve 27a, 27b Refueling pump 28a, 28b Flowmeter 29a, 29b valves 30 Mixing control valve 31 valve body 32a First inlet 32b Second inlet 33 Hydraulic chamber 34 mixing chamber 35 Outlet 36 pistons 37 rod 38a, 38b valves 39a, 39b springs 40a, 40b stopper 50 Third piping system 51,52 Flowmeter

─────────────────────────────────────────────────── ─── Continued Front Page (51) Int.Cl. ⁷ Identification Code FI Theme Coat (Reference) B67D 5/30 B67D 5/30 A

Claims (3)

[Claims] 1. An oil supply pump for supplying a first fuel oil and a second fuel oil, respectively, and a flow meter for counting the flow rate of a liquid mixed with the first and second fuel oil supplied by the oil supply pump, In a fueling device having a piping system connected to a discharge port side of a flow meter and having a fueling hose having a fueling nozzle at a tip thereof, the first and second piping systems are provided on the discharge side of the fueling pump.
Is provided with a hydraulic pressure chamber into which each fuel oil flows, and a valve mechanism that changes the discharge amount according to the hydraulic pressure of each fuel oil in the hydraulic pressure chamber is provided, and the fuel oil is discharged through the valve mechanism. An oil supply device, wherein a mixing control valve provided with a mixing chamber for mixing the first and second fuel oils is arranged. 2. The hydraulic chamber is partitioned and formed by pistons so that the first and second fuel oils flow into the hydraulic chambers, and the flow passages of the partitioned hydraulic chambers are interlocked with the pistons. The oil supply device according to claim 1, further comprising a valve body that constitutes a valve mechanism. 3. The oil supply device according to claim 2, wherein a stopper is provided near the valve body so as to prevent the valve body from being completely closed.