JP3412147B2 - Refueling device with seismic function - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refueling device having a seismic function for shutting off power supply to a refueling mechanism and a control device when an impact is received due to an earthquake or a collision of an automobile.

[0002]

2. Description of the Related Art In a gas filling station, a vibration responsive device that is activated by vibration as disclosed in Japanese Patent Laid-Open No. 60-193894, for example, is provided in case a shock is applied to the fueling device due to an earthquake or a collision of an automobile. A switch and a relay forming a self-holding circuit are connected in series and connected in parallel to a power supply line, and the vibration response switch is turned on to cut off the supply of electric power to the oil supply device.

Since these vibration responsive switches and relays are usually housed in an explosion-proof case and assembled as a power shut-off unit, the number of man-hours required to be connected to the power line is increased and another explosion-proof case is required. Therefore, there is a problem that the cost is increased. Also, since the relay circuit keeps the power supply cut off due to the shock, once the power is cut off due to the shock, the relay can be operated and restored even if there is no problem with refueling. It has to be troublesome to operate.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to make a small shake that does not cause an abnormality in the oil supply device.
An object of the present invention is to provide a refueling device with a seismic function that can easily restore the suspension of refueling .

[0005]

[0006]

In order to solve such a problem, in the present invention, a pump motor, an oil supply pump driven by the pump motor, an oil supply amount is measured, and a flow rate pulse signal is output. a flow rate measuring means, the nozzle off the signal from the nozzle switch, and turns on the pump motor receives the nozzle-seat signal, turns off, housed in explosion - proof casing you count the amount of oil receiving said flow pulse signals In a refueling device including refueling control means,
Osamu in the explosion-proof case that outputs a seismic signal is detected the earthquake
Stores the seismic sensor and the seismic signal, and clears the memory contents by an external refueling restart command.
Seismic-motion storage means and the period during which the seismic-motion signal is stored
During the period, display that the refueling is stopped based on the seismic signal
Contents stored in the seismic storage means provided with a display device
Causes the refueling control means to turn the pump motor on and off.
I tried to do it .

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to the illustrated embodiments. FIG. 1 shows an embodiment of an oil supply device to which a power cutoff device according to the present invention is applied. In the figure, reference numeral 1 is a liquid feed pump driven by a pump motor 2, and a riser pipe 3 is used. The fuel oil in an underground tank (not shown) is sent to the refueling nozzle 6.

A flow meter 4 has a liquid feed pump 1 at the inlet.
And a refueling nozzle 6 is connected to the outflow port via a hose 5, and the amount of refueling refueled from the nozzle 6 to the vehicle fuel tank is output as a flow rate pulse signal from a flow rate pulse signal transmitter 7. is there.

Reference numeral 8 denotes a control device, which outputs a signal to the motor control switch 10 in response to a lubrication request signal from the nozzle switch 9 to supply the power of the power line 11 to the pump motor 2.
Further, the flow rate pulse signals output by refueling are integrated and displayed as a refueling amount on the refueling amount display 12, and further, the refueling stop signal from the nozzle switch 9 turns off the motor control switch 10 to supply power to the pump motor 2. It works to cut off.

Further, the control device 8 includes a keypad 2 which will be described later.
Control for preset refueling by receiving signal from 0,
While continuing the refueling and stopping the refueling at the time of seismic shock, which will be described later, the information indicating that the refueling is suspended due to the seismic shock is output to the keypad 20.

Reference numeral 20 denotes the above-mentioned keypad, which is arranged at a position where it can be easily operated, in this embodiment, in the vicinity of the fueling nozzle hook 15 of the box body 14, and as shown in FIG. 2, a numeric keypad for setting a preset amount and the like. 21, the controller display 22 for displaying information from 8, and Ryosuru finger post-processing method for refueling operations were interrupted by seismic continuous button 23, end button 2
4 is provided.

FIG. 3 shows an embodiment of the control device 8 described above. In the figure, reference numerals 30 and 31 denote a case body and a lid which constitute a flameproof case, and are provided on both sides of the case body 30. Through holes 32, 33 for drawing in the power supply line 16 are formed therein, circuit boards 34, 35 constituting the control device 8 are housed and fixed therein, and a circuit board 36 is housed and fixed in the lid 31. A vibration sensor 40 is mounted on one circuit board 35.

FIG. 4 shows a movable electrode 41 which is composed of a conductive spring plate and which is positioned on the upper side and a fixed electrode 42 which is positioned on the lower side so as to have a vertical relationship with the movable electrode 41. The rear end of 41 is fixed to the case 43 on the cantilever so that the tip of 41 bends and contacts the fixed electrode 42, and the movable electrode 41 is always in elastic contact with the fixed electrode 42, and itself can move vertically. A spherical moving body 44,
In this embodiment, a steel ball is guided by a taper portion 45 formed in the lower part of the case 43 and accommodated in a space 46 of the case 43 so as to be at a predetermined position.

The above-mentioned taper portion 45 formed on the bottom surface of the case 43 is expanded upward so that the spherical moving body 44 is brought into contact with a predetermined position of the movable electrode 41 so that the movable electrode 41 becomes the fixed electrode 42. While being elastically contacted at all times, when a lateral vibration is applied, the spherical moving body 44 moves over the tapered portion 46 and separates the movable electrode 41 from the fixed electrode 42 by its elasticity as shown by the dotted line in the figure. The taper angle that allows

FIG. 5 shows an embodiment of the above-mentioned control device. In the figure, reference numeral 51 is a refueling permission means, and when a nozzle disengagement signal from the nozzle switch 9 is received,
The data of seismic vibration storage means 52 described later is checked, and when the seismic vibration signal is not stored, a refueling permission signal is output to operate the pump motor 2, the counting means 53 is reset to zero, and the seismic vibration signal is also returned. If is recorded, the refueling permission signal is not output.

Reference numeral 52 denotes a seismic-motion storage means which stores the seismic-sensation signal when the seismic-sensation signal is output from the seismic-sensing device 40 due to a vibration such as an earthquake, and the end judgment means 54 which will be described later.
When the signal from and the continuous signal by operating the continuous button 23 of the keypad 20 are input, the stored seismic signal is cleared, and the nozzle disengagement signal is input while the seismic signal is stored. In this case, the display 22 of the keypad 20 outputs an instruction to perform the seismic shock canceling process.

The end judging means 54 clears the seismic signal stored in the seismic storage means 52 when the end button 24 of the keypad 20 is operated while the nozzle disengagement signal is being output. It outputs a signal. Next, the operation of the apparatus configured as described above will be described based on the flowchart shown in FIG. Nozzle 6 to refuel
When the nozzle disengagement signal is output from the nozzle switch 9 and the nozzle disengagement signal is output from the nozzle hook 15 (step a), the refueling permission unit 51 determines whether the seismic sensitivity signal is stored in the seismic sensitivity storage unit 52 (step S). B).

When there is no seismic signal, the refueling permission means 51 outputs a refueling permission signal, and the refueling amount indicator 1
2 returns to zero, and pump motor 2 turns on (step
It becomes possible to refuel.

When the seismic signal is stored, the refueling operation is disabled and the keypad 20
An instruction to perform the operation for canceling the earthquake is displayed on the display 22 of.

When a flow rate pulse signal is output from the flow rate pulse transmitter 7 by refueling, this pulse signal is counted by the counting means 53.
Is added and displayed as the amount of oil supply on the oil supply amount display 12 (step E).

During refueling, while the nozzle disengagement signal is being output from the nozzle switch 9 (step F),
The presence or absence of a seismic signal from 0 is detected (step H).

The seismic sensor 40 does not output a seismic signal, and the refueling is finished as it is, the main valve of the nozzle 6 is closed and the flow pulse signal is stopped (step d), and the nozzle 6 is returned to the nozzle hook 15. When the nozzle application signal is output (step F), the refueling permission means 51 stops the power supply to the pump motor 2 and turns off the pump motor 2 (step).

On the other hand, the seismic shock absorber 40 due to an earthquake during refueling
When a seismic signal is output from (step), the seismic storage means 52 stores this seismic signal and outputs a signal indicating that the seismic signal is stored to the refueling permission means 51 to stop the pump motor 2. Then, the fact that the refueling is stopped is displayed on the display 22 of the keypad 20 by detecting the seismic signal (step).

If the cause of the seismic signal is due to an earthquake or the like and there is a possibility that the refueling device is affected,
First of all, the nozzle 6 is returned to the nozzle hook 15.

Next, the end button 24 of the keypad 20
To perform the refueling ending process. As a result, the end signal is output (step), and the nozzle 6 is returned to the nozzle hook 15 and the nozzle return signal is output from the nozzle switch 9 (step o). The seismic signal stored in 52 is cleared, and the display on the display 22 of the keypad 20 is erased.

If the nozzle 6 is not returned to the nozzle hook 15 when the end button 23 is operated (step E), the nozzle 6 is returned to the nozzle hook 15 and the nozzle switch 9 returns the nozzle. After the signal is output, the process of the step (W) is executed.

On the other hand, when a seismic signal is output during refueling (stepping), but when the vibration is extremely small without returning the nozzle 6 to the nozzle hook 15, the keypad 2
The continuous button 23 of 0 is operated.

When a continuous signal is output by operating the continuous button 23 (step C), the seismic-motion storage means 52 clears the stored seismic-motion signal and resets the amount of refueling before interruption. Then, the stopped pump motor 2 is operated again, and the display on the keypad 20 is erased (step yo).

As a result, refueling is restarted and the flow pulse signal of the flow pulse generator 7 is input (step
D) The refueling amount after the restart is added to the refueling amount before the stop and is displayed on the refueling amount display 12 (step E).

As a result, the seismic canceling process can be performed by a simple operation of operating the button of the keypad 20 for a slight shake, and the amount of refueling up to immediately before the suspension of refueling can be performed. It is possible to prevent the disappearance of the oil and perform the counting process similar to the series of refueling.

In the above-mentioned embodiment, the processing after the interruption of the refueling due to the vibration is carried out by the keypad provided in the main body of the refueling apparatus.
Obviously, the same effect can be obtained even if it is performed by the OS.

[0032]

As described above, according to the present invention ,
The seismic signal from the seismic means is stored in the seismic storage means,
On the pump motor based of the content, to turn off,
Seismic shock in small swings that do not affect refueling
You can easily refuel by simply clearing the contents of the storage means.
Can be opened .

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of the present invention.

FIG. 2 is a diagram showing an embodiment of a keypad.

FIG. 3 is a diagram showing an embodiment of the above control device.

FIG. 4 is a cross-sectional view showing an example of a seismic sensor.

FIG. 5 is a block diagram showing an embodiment of a control device.

FIG. 6 is a flowchart showing the operation of the above apparatus.

[Explanation of symbols]

2 pump motor 11 power lines 16 power lines 20 keypad 22 Display Explosion-proof case containing control means 40 shock absorber

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B67D 5/32

Claims (3)

(57) [Claims] 1. A pump motor, an oil supply pump driven by the pump motor, flow rate measuring means for measuring the amount of oil supply and outputting a flow rate pulse signal, a nozzle disengagement signal from a nozzle switch, and a nozzle application signal. Upon receiving the flow rate pulse signal, the pump motor is turned on and off, and a refueling device including a refueling control means housed in an explosion-proof case for counting the refueling amount detects an earthquake. Fits in the explosion-proof case that outputs a seismic signal
The seismic-sensing means and the seismic-sensing signal stored therein, and the seismic-sensing memory means for clearing the stored contents by an external refueling restart command, and the seismic-sensing signal during the period in which the seismic signal is stored. A refueling device with a seismic function, comprising a display for displaying that the refueling is stopped based on the seismic function, and the refueling control means turns on and off the pump motor according to the contents stored in the seismic storage means. 2. The refueling control means, when refueling is interrupted by the vibration sensing means and the nozzle detachment signal is being output, is refueled from the outside by a command to restart refueling The refueling device with a vibration-sensing function according to claim 1, wherein the refueling can be restarted by adding to the total. 3. The seismic function with seismic function according to claim 1, wherein the refueling control means receives a command for instructing the end of refueling when refueling is interrupted by the seismic sensing means and the nozzle application signal is being output. Refueling device.