JPS6024035B2 - Refueling device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a high-hanging refueling system, that is, a refueling rhombus in which at least a portion of its components is suspended above a refueling point.

This type of high-hanging refueling system has the advantage of requiring less installation space compared to ground-mounted refueling systems, but on the other hand, vehicles, etc. may come into contact with or collide with the hanging part of the refueling system. There is a risk that it may break and cause oil to leak, ignite, and explode.

This invention has been proposed in view of the above points, and in a refueling rhombus in which at least a part of the rhombus component part is suspended above the refueling pattern Q point, a horizontal direction of a certain size or more is attached to the hanging part. A displacement mechanism that allows displacement of the hanging portion in a substantially horizontal direction when an external force is applied and returns the hanging portion when the external force is removed; and a displacement mechanism that detects displacement of the hanging portion beyond a certain level. and means for generating a detection signal.

Examples will be described below with reference to the drawings.

In different figures, the same reference numerals indicate the same parts or parts having the same function. Reference numeral 8 denotes an oil supply pump which is rotationally driven by a motor 9 and sends oil from an underground oil storage tank (not shown) from a suction pipe 10 to the oil supply pipe 7 .

Reference numeral 6 denotes a hanging pipe that hangs down from a high place in the gas station, forming an oil supply path connected to the oil supply pipe 7, and a case 5 is supported at the lower end.

3 is a flow meter in the case 5, 2 is a refueling hose led out from the case 5, and 1 is a refueling nozzle at the tip of the refueling hose 2.

Reference numeral 4 designates a display that receives the output from the flow meter 3 and displays the amount of refueling, the amount of refueling, etc., and 6' represents a flange at the upper end of the hanging pipe 6.

In FIGS. 5 and 6, reference numeral 11 denotes a transmitter that generates a pulse (oil supply amount signal) corresponding to the oil supply amount measured by the flowmeter 3, and the signal is input to the display 4 via the line 12. Ru.

Further, in FIGS. 4 and 6, reference numeral 13 indicates a protective tube of the oil supply hose 2. Incidentally, the refueling nozzle 1 is supported by a suitable nozzle neck 5' (not shown except in FIG. 1) when it is not convenient. As described above, the hanging pipe 6 or the protective tube 13 forms a hanging support mechanism that suspends a part of the component part (the hanging part) of the oil supply system from the ceiling, and the feature of this invention is in this hanging support mechanism. The point is that a displacement mechanism MD that allows displacement of the hanging portion of the oil supply device is provided in conjunction with the oil supply device. The configuration of this displacement mechanism MD will be described later, but it allows displacement of the hanging support mechanism and the hanging portion when an external force of a certain magnitude or more is applied. In other words, it does not displace due to the action of an external force such as when a worker pulls on the refueling hose, but displaces in the event of a collision with a car or the like. If the refueling hose is displaced to the extent that it is pulled, there is a risk of colliding with nearby workers or automobiles when the refueling hose is returned to its position, and the refueling range cannot be limited. In other words, it becomes possible to perform refueling work at a position other than the predetermined position, and safe work is not guaranteed. An example of the configuration of the displacement mechanism MD will be described with reference to FIGS. For example, the displacement mechanism MD in FIG.
This is applied to the oil supply device shown in FIGS.
This makes it possible to restore disturbances.

15 is the main body of the displacement mechanism MD, and its lower through hole 15
A spherical seat surface 15F is formed in connection with the sun, and a hemisphere 17 connected to the upper end of the hanging pipe 6 is formed on this seat surface 15F.
is supported.

Reference numeral 16 denotes a steel ball which is held on the seat surface for 15 days and is fitted into a ring 17' formed around the hemisphere 17 so as to maintain the vertical state shown in the drawing at all times.

An elegant connecting pipe 18 connected to the oil supply pipe 7 is connected to the hemisphere 17 by a connector 20, and oil is dripped from the oil supply pipe 7 through a through hole A formed in the center of the hemisphere 17. It is designed to be fed into the inner hole B of the tube 6. A compression spring 19 is provided between the upper wall of the main body 15 and the upper surface of the hemisphere 17.
is interposed, and the elasticity of this compression spring 19 constantly urges the hemisphere 17 downward. Due to the weight of the hanging pipe 6, case 5, etc., the steel ball 16 of the hemisphere 17 fits into the ring groove 17', so that the vertical state shown in the drawing is always maintained. The elasticity of the compression spring 19 is set so that the hanging pipe 6, the case 5, etc. are not displaced by the external force normally applied during refueling work, that is, the elasticity is set to such a degree that the hanging pipe 6 does not become in the oblique state shown in FIG. It is set to Reference numeral 21 denotes an insulating frame installed inside the main body 15, and a ring-shaped conductor 22 is attached to the upper and lower surfaces of the frame.

A lead wire 22' is led from this conductor 22 to a terminal 23 from the body 15. The body 15 and the hemisphere 17 are made of conductor. SR is a seal ring. With the above configuration, for example, automatic users are in Case 5.
When collided with, the flower tube 6 is displaced as shown in FIG.

When displaced, the hemisphere 17 becomes the steel ball 16 as shown in FIG.
The fitting relationship with the ring groove 17' is severed and the upper end portion thereof comes into contact with the conductor 22. This contact electrically connects the terminals 23, and if this is incorporated into a suitable control circuit, the displacement can be detected electrically and the oil supply can be stopped. FIG. 9 shows an example of a control circuit for this purpose.

In this circuit, the circuit between the terminals 23 in FIG. 8 is shown as a switch 23. 26 is a /zzle switch, which is closed by removing the nozzle 1 from the nozzle hook 5'(29''
is a regular contact of the relay 24), the relay 25 is energized, the contact 27 of the energizing circuit of the pump drive motor 9 is closed, and the motor 9 rotates to enable oil supply.

In this state, when the displacement mechanism is displaced as shown in Fig. 8 and the terminals 23 are connected (the switch 23 is closed in Fig. 9), the relay 24 is energized and the contacts 29 and 29' are closed. contact 29'' is opened.

The relay 24 is self-held by closing the contact 29, and the contact 2
The alarm 31 is activated by closing 9'. The relay 25 is deenergized by the connection of the contact 29'', and the contact 27 opens the energizing circuit of the motor 9, stopping the rotation of the motor 9 and thus disabling or stopping oil supply.The circuit between the terminals 23 is so-called intrinsically safe. No. 9 which forms a circuit and forms a non-intrinsically safe circuit.
A suitable coupling device (
(not shown) is interposed.

Further, the switch 23 is used to release the self-holding state of the relay 24. When the external force ceases to act, the hanging pipe 6, case 5, etc. are returned to their original positions by their own weight and the elasticity of the compression spring 19.

The examples shown in FIGS. 10 and 11 are based on the same principle as in FIGS. 7 and 8, but the difference from FIGS. 7 and 8 is that the sphere 30 is a substantially perfect sphere. The difference is that the displacement detection means is different.

In FIGS. 10 and 11, the displacement detecting means includes a proximity switch 31 and a ring-shaped magnetic body 32 embedded around the periphery of the sphere 30 at a position corresponding to the outer circumference thereof.

Further, the steel ball 16 is pushed by the spring 19 into the ring groove 17'.
is engaged with. The strength of the spring 19 determines the strength of the lateral force required to move the sphere 30 and the hanging tube 6. In this respect, the spring 19 in FIGS. 10 and 11 has the same function as the spring 19 in FIGS. 7 and 8, but the spring 19 in FIGS.
In FIG. 11, the spring 19 does not have the function of restoring the sphere 30' and therefore the hanging tube 6, and the restoring is performed by its own weight. 33 is the main body of the displacement mechanism MD, and the oil supply pipe 7 is directly connected to this.

FIG. 11 shows a state in which the hanging pipe 6 is displaced due to the action of an external force. As the displacement mechanism shown in FIGS. 2 and 3, the mechanism shown in FIG. 7 or 10 is used.

In the configurations shown in FIGS. 7 and 10, the hemisphere 17 or the sphere 30 is connected to the tube 6 due to the engagement between the ring book 17' (circulating the hemisphere 17 or the sphere 30 in a latitudinal line) and the steel ball 16.
It can be rotated with.

This has the effect of being able to change the direction of the display 4 and making it easier for fuelers and customers to see the display. The embodiment shown in FIG.
An example of the configuration of the displacement mechanism in FIG. 4 is shown, and FIG. 13 shows an example of the configuration of the displacement mechanism MD in FIG. 6. These have a simple structure that uses the elasticity of a spring without using a spherical catch mechanism. In FIG. 12, the protective tube 13 of the refueling hose 2 can be displaced by contact or collision, and the support tube 36 of the protective tube 13 is connected to the wall of the case 5.
The protective tube 13 is suspended from the hanger 38 of No. 4 via a coil spring 37, and the coil spring 37 allows the protective tube 13 to move in a mirror manner via the support tube 36.

The elasticity of the coil spring 37 may be appropriately set depending on its material, number of turns, diameter, etc. Further, if the coil spring 37 is wound in advance so that it is tightly wound and is still biased in the direction of contraction, displacement becomes possible only when a force of a certain value or more is applied. Numerals 39 and 40 are screws for fixing the coil spring 37 to the hanger 38 and the support tube 36.

35 is a connector between the oil supply pipe 7 and the oil supply hose 2.

FIG. 13 shows a displacement mechanism in which the protection tube 13 is hooked to the main body 41 and suspended.

13F is a flange formed at the upper end of the protection tube 13, and the protection tube 13 is hung from the main body 41 by this flange.

Reference numeral 42 denotes a compression spring interposed between the main body 41 and the flange 13F, which maintains the vertical position shown in the figure until a certain force or more is applied to the protective tube 13, and enables it to return to its original position after being displaced. It is.

Although the features of the present invention are as described above, they are not limited to the illustrated example.

Any of the displacement mechanisms shown in FIGS. 7, 8, 10, and 11 may be used in any of FIGS. 1 to 6. Furthermore, the displacement mechanism can have various configurations other than the illustrated example, and its installation position is not limited to the illustrated position. Moreover, various displacement detection mechanisms and oil supply stop mechanisms other than the illustrated examples are conceivable. For example, instead of controlling the pump motor, it is also possible to control the opening and closing of a valve interposed in the oil supply system. It would also be possible to make the set value for allowing displacement in response to external forces adjustable. Since the present invention has been described in detail above, when an automobile or the like contacts or collides with the hanging portion of the refueling system, the refueling system is displaced in the direction of action of the external force, thereby avoiding the risk of damage to the refueling system.

Furthermore, this displacement is detected and the refueling is stopped.
Even if the device is destroyed, oil spillage, ignition and explosion can be prevented, and a safe refueling device can be obtained.

[Brief explanation of drawings]

1, 2, 3, 4, 5, and 6 are external views of different embodiments of the oil supply device embodying the present invention,
7, 10, 12, and 13 are cross-sectional views showing the configuration of the displacement mechanism that is the main part of this invention, and FIGS. 8 and 11.
The figures are diagrams showing different operating states of the mechanisms shown in FIGS. 7 and 10, respectively, and FIG. 9 is a control electric circuit diagram. 1...Refueling nozzle, 2...Refueling hose, 3...Flow meter, 4...
・Indicator, 5... Case, 6... Downpipe, 7...
Oil supply pipe, 8... Oil supply pump, 9... Motor, 13.
...Protection tube, 14...Wall of case 5, 15.33,4
1... Main body, 16... Steel ball, 17... Hemisphere, 1
7...Ring groove, 19, 42...Compression spring, 21.
...Insulator, 22...Conductor, 23...Detection terminal, 2
4, 25... Relay, 26... Nozzle switch, 27,
29, 29', 29^... Relay contact, 30... Sphere, 31
... Alarm, 32... Ring-shaped magnetic body, 36... Support tube, 37... Coil spring, SR... Seal ring. Figure 1: Hair, Figure 2, Younger brother, Hakama, Figure 4, Hakama, Colorful figure, Figure 7: Wind collar, Hair, Figure 8, Closed figure, Younger brother / Figure 2, Shiba / Figure 3

Claims (1)

[Claims] 1. In a refueling device in which at least a part of the device component is suspended above the refueling point, when a horizontal external force of a certain magnitude or more is applied to the hanging portion, the hanging portion is substantially displaced in the horizontal direction. and a displacement mechanism that allows the hanging portion to return to its position when the external force is removed, and means that detects displacement of the hanging portion beyond a certain level and generates a detection signal. Refueling device.