JPH0977199A - Oil feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow oil feeding at a safety dispensing quantity at an oil feeder regulated by fire regulations to be clone correctly and quickly. SOLUTION: An oil feeder controls a control valve 5, for gradually varying a dispensed quantity placed on an oil feed path 3 so that the dispensed quantity is at a regulated safety quantity or lower and in its vicinity, from the dispensed quantity detected by a dispensed quantity detecting means 6 when setting means 9, 10 for operating at the time of oil feeding at the regulated quantity are operated, thereby automatically controlling oil feeding at the regulated safety dispensed quantity.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refueling device installed in a gas station, a refueling car or the like.

[0002]

2. Description of the Related Art Conventionally, for example, when kerosene is refueled from a fixed refueling device installed in a refueling vehicle or a gas station into a small transport container such as a plastic container, kerosene is splashed and bubbles are generated. So that there is no danger of overflowing
In addition, even if it overflows, it is possible to keep the amount to a minimum, but instead of refueling with the maximum discharge amount provided by the refueling device, the safe discharge amount prescribed by the Fire Service Act (in this case 60 liters per minute or less ) Is required to refuel.

Therefore, when refueling a transport container,
Adjust the nozzle hand valve to refuel at a discharge rate of 60 liters per minute or less, and adjust the opening of the nozzle hand valve in two stages: maximum discharge rate and discharge rate of 60 liters per minute or less. A simple stopper was installed so that it could be switched each time to refuel, or a manual valve provided in the middle of the refueling passage was used to adjust the amount of discharge to refuel.

[0004]

However, in the method of adjusting the hand valve opening of the nozzle in consideration, the discharge rate is 6 minutes per minute.
Since it is difficult to surely keep it below 0 liters,
We are refueling at a discharge rate much lower than 60 liters per minute, so it takes longer than necessary to refuel,
Since the hand valve had to be held with a certain amount of force, the operator was burdened. .

Further, in the method of providing a simple stopper on the valve on the nozzle side and the method of providing a manual valve in the oil supply passage, the discharge condition is constant, that is, the pump capacity, the piping condition, the nozzle head difference, the voltage fluctuation, etc. are constant. Although it is effective in some cases, it cannot be considered that the above-mentioned conditions are constant at a gas station or a refueling vehicle, and it is not possible to cope with the fluctuation.

An object of the present invention is to provide an oil supply device capable of solving the above problems.

[0007]

In order to achieve the above object, the present invention relates to an oil supply device in which oil in a tank is pumped by a pump and discharged from a nozzle via an oil supply passage, and the discharge amount in the oil supply passage is adjusted. Discharge amount detecting means for detecting,
A control valve which is provided with a valve drive means for gradually displacing the valve element from fully open to fully closed, and a setting means for setting a mode for performing oil supply at a legally safe discharge amount, the control valve for varying the discharge amount of the oil supply passage; At the start of the refueling mode, the valve drive means is controlled to bring the control valve opening to a position where it is predicted to reach a target discharge amount within a predetermined range equal to or less than the legal safe discharge amount, and during refueling in the refueling mode, , The signal from the discharge amount detection means is constantly monitored, and when the discharge amount deviates from the predetermined range, the valve drive means is controlled to a position where the control valve opening is converged to the target discharge amount. It is an object of the present invention to provide an oil supply device provided with a control unit that operates.

[0008]

According to the present invention, it is possible to easily set the legally safe discharge amount when refueling a transportation container from a refueling device provided in a gas station or a refueling vehicle, and even if the discharge conditions during refueling change, the legal safe discharge amount is always maintained. It is less than the safe discharge amount and can be refueled near the legal safe discharge amount.

[0009]

An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is an explanatory view showing the overall structure of a fueling device mounted on a fueling vehicle according to an embodiment of the present invention. Reference numeral 1 is a tank for storing kerosene, and a motor pump 2 is used for refueling. The oil is supplied from the nozzle 4 with the hand valve via the oil supply passage 3.

A control valve 5 for varying the discharge amount and a flow meter 6 as a discharge amount detecting means for converting the discharge amount in the oil supply passage 3 into a pulse and outputting a pulse signal are provided in the middle of the oil supply passage 3.

Reference numeral 7 denotes an operating portion, which is an indicator 8 for displaying refueling data and the like, and a general plastic container having a capacity of 18 liters which is required to refuel at a legally safe discharge rate of 60 liters per minute or less. The preset switch 9 used for refueling and other refueling are set to the refueling mode with the legal safe discharge amount including the setting switch 10 used when it is necessary to refuel at a discharge amount of 60 liters per minute or less. Setting means, a numeric keypad 11 for inputting an appropriate amount of refueling, a power switch 12 for turning on the display 8 to put it in a standby state, and an operation switch for driving the motor pump 2 into a refueling state. It is composed of 13 etc.

A battery 14 provided in the vehicle is connected to the power-supplied portion 15.

Reference numeral 16 is a control means composed of a conventionally well-known microcomputer or the like, which displays data on the display 8 or controls the opening of the control valve 5 on the basis of signals from the switches of the flow meter 6 and the operation unit 7. Various liquid supply modes are executed by adjusting or driving the motor pump 2.

Reference numeral 17 denotes a battery connected to the control means 16, which is a backup power source for the control means 16 and which constantly supplies electric power sufficient for the control means 16 to hold itself.

FIG. 2 shows the structure of the control valve 5. 18 is a motor which is a valve driving means equipped with a speed reducer 19, 20 is a ball valve which is a valve body for opening and closing the oil supply passage 3, and 21 is a shaft 22 of the ball valve 20. The gear that turns the motor 18
The ball valve 20 is opened and closed by driving in the forward and reverse directions, and the flow rate of the oil supply passage 3 is adjusted and closed.

Reference numeral 23 is an encode disk integrally attached to the gear 21, and 24 and 25 are signal holes 26, 27, 2 formed in the peripheral portion of the encode disk 23.
First and second photocouplers for detecting 8, 29, 30 are used for detecting the valve opening of the ball valve 20.

That is, as shown in the plan view of the main part of FIG. 3, setting is made so that the signal holes 26 and 27 are detected by the first and second photocouplers 24 and 25, respectively, at the fully open position of the ball valve 20, As the ball valve 20 is closed,
The first photocoupler 24 sequentially detects 28 and 29 signal holes, and when the ball valve 20 is fully closed and 30 signal holes are detected, the maximum flow rate when the ball valve 20 is fully opened is about 120 liters per minute ( About 55 liters per minute at the signal hole 28 detection position (control valve throttle position A) and about 20 liters per minute at the signal hole 29 detection position (control valve throttle position B). It is set to limit the flow rate to.

Next, the usage and operation of the present invention will be described with reference to FIG.

First, a description will be given of the case of performing normal refueling, for example, the operation of refueling a home tank in which the discharge amount is not particularly regulated.

The worker who arrives at the refueling place turns on the power switch 12 (step 1) and turns on the control means 16. Then, 0 liter indicating the standby state is displayed on the display 8 (step 2).

If the preset switch 9 is pressed (step 3), the discharge rate of 60 liters per minute or less is 18
The preset refueling mode for refueling liters (step 4) is entered, and if the setting switch 10 is pressed (step 5), the refueling mode is delivered at a discharge rate of 60 liters / min or less regardless of the refueling rate (step 6). When the switch 13 is pressed (step 7), the normal refueling mode at the maximum discharge amount is set. Here, the operation switch 13 is pressed to perform the normal refueling.

Then, the signal enters the control means 16 to enter the normal refueling mode, the normal refueling signal is output to the control valve 5 and the motor pump 2, the motor 18 of the control valve 5 rotates, and the first and second photocouplers 24. , 25 stop at the positions where the signal holes 26, 27 of the encode disk 23 are detected, the ball valve 20 is fully opened, the motor pump 2 starts driving (step 8), and the discharge amount of about 120 liters per minute. Will be able to refuel at. During this period, a pulse is output from the flow meter 6, and the control means 16 that has received the pulse converts the flow rate into a flow rate and causes the display 8 to display an integrated amount of oil supply.

When the worker inserts the nozzle 4 into the oil supply port of the home tank and opens the hand valve to refuel, and when the required amount of fuel is completed, close the hand valve of the nozzle 4 and press the operation switch 13 again (step 9). The signal enters the control means 16 and enters the standby mode, the motor of the control valve 5 rotates, the first photocoupler 24 stops at the position detecting the signal hole 30 of the encode disk 23, and the ball valve 20 closes. Then, the motor pump 2 is stopped (step 10).
Then, the operator confirms the final refueling amount displayed on the display unit 8 and the refueling ends.

At this time, if any one of the preset switch 9, the setting switch 10 and the operation switch 13 is continuously pressed (steps 3, 5, and 7), refueling in each mode can be performed, and refueling at this place is possible. If you're done,
The power supply to the control means 16 can be turned off by pressing the power switch 12 (step 11) (step 12).

Next, there is a case where preset lubrication is performed in an 18-liter plastic container. In this case, the power switch 12 is pressed (step 1) and the control means 16 is powered on (step 2). If the preset switch 9 is pressed (step 3), the preset lubrication mode is entered, so as shown in FIG. 5, the operation switch 13 is continuously pressed (step 13).

Then, the signal enters the control means 16, the signal is output to the control valve 5 and the motor pump 2, the motor 18 of the control valve 5 rotates, and the first photocoupler 24 causes the signal hole 28 of the encoding disk 23. Is stopped at the position where the control valve throttle position A is detected, the motor pump 2 starts driving (step 14), and the target discharge amount of about 5 per minute
Since the fuel can be supplied at a discharge amount of 5 liters, that is, at a legally safe discharge amount, the worker inserts the nozzle 4 into the oil supply port of the plastic container and opens the hand valve to perform the oil supply.

However, the voltage may fluctuate during refueling, there may be a slight clogging of the refueling passage 3 (clogging of the strainer provided in the middle of the pipe passage), the routing of the refueling hose, the height of the nozzle 4, etc. Due to the difference, the ejection amount may vary. Therefore, the control means 16 constantly monitors the pulse sent from the flow meter 6 to determine whether the discharge rate Q is in the range of 50 liters per minute or more and 60 liters or less. When the discharge amount deviating from (1) is detected (step 15), the control means 16
A correction drive signal for driving the motor 18 of the control valve 5 is output from (step 16), and the opening of the control valve 5 is corrected so as to converge to 55 liters per minute.

Specifically, for example, when the control means 16 deviates from the above range, the control means 16 causes the motor 18 of the control valve 5 to normally rotate at a predetermined time interval of T1 millisecond until it enters the above range. Alternatively, the motor 18 of the control valve 5 is normally or reversely rotated by T2 (<T1) milliseconds at a predetermined time interval until the target discharge amount of 55 liters per minute is reached. A table is provided, and based on the table, a signal for driving the motor 18 of the control valve is continuously output from the control means 16 so that the discharge rate converges to 55 liters per minute, and the discharge rate is 55 minutes per minute. The signal output is stopped when the liter is reached.

In this way, even if the amount is always less than the legally safe discharge amount, the fuel amount can be supplied at a discharge amount close to the maximum, and the fuel can be supplied safely and in the shortest time.

Eventually, when the control means 16 detects from the pulse signal from the flow meter 6 that the amount P of oil supply exceeds X liters (step 17), the control means 16 causes the control valve 5 to operate.
A signal for driving the motor 18 is output, the motor 18 of the control valve 5 rotates, and the first photocoupler 24 stops at the position where the signal hole 29 of the encode disk 23 is detected, and the control valve throttle position B is set. (Step 18) The discharge amount is suppressed to prevent excessive foaming and overflow from the container.

Further, when the control means 16 detects that the refueling progresses and the refueling amount P reaches 18 liters (step 19), a signal for driving the motor 18 of the control valve 5 is output from the control means 16 to perform control. The motor of the valve 5 rotates, and the first photocoupler 24 stops at the position where the signal hole 30 of the encode disk 23 is detected.
Is closed and the motor pump 2 is stopped (Step 2
0), the preset refueling for the 18-liter plastic container is completed, the preset refueling mode is exited, and then the mode refueling is continuously performed by the same operation as in the case of the normal refueling (steps 3, 5, 7) The power can be turned off (steps 11 and 12).

Next, there is a case where refueling is carried out in a transport container other than the 18 liter capacity plastic container. In this case as well, it is necessary to refuel at a legally safe discharge amount. In this case, therefore, the power switch 12 is used. After pressing (step 1), turning on the power supply to the control means 16 (step 2) and pressing the setting switch 9 (step 5), the refueling mode with a discharge rate of 60 liters per minute or less is entered. As shown in, the operation switch 13 is continuously pressed (step 21).

Then, similarly to the case of the preset lubrication, the control valve 5 becomes the throttle position A, the motor pump 2 is driven (step 22), and the opening of the control valve 5 is corrected (steps 23 and 24). Refuel as much as you need.

After refueling, when the operation switch 13 is pressed again (step 25), the control valve 5 is closed, the motor pump 2 is stopped (step 26), and the refueling mode with a discharge rate of 60 liters per minute or less is started. After exiting, the mode can be selected (steps 3, 5, and 7) or the power can be turned off (steps 11 and 12).

By the way, in the present embodiment, only the case of refueling kerosene from the refueling vehicle is described, but switching between the case of refueling at the maximum discharge amount and the case of refueling at the safe discharge amount specified by the Fire Service Act is possible. Switching is also necessary when refueling a necessary refueling device, for example, when refueling a tank of a refueling vehicle from a fixed refueling device installed at a gas station and when refueling kerosene in a transport container. It goes without saying that it can be carried out as follows.

[0037]

Since the present invention is configured as described above, it is possible to easily set the legal safe discharge amount when refueling a transport container from a refueling device provided in a gas station or a refueling vehicle, and Even if the discharge conditions change, it is possible to always refuel in the vicinity of the legal safe discharge amount, which is less than the legal safe discharge amount. Safe refueling work can be performed without the kerosene splashing and spilling, or bubbles forming and overflowing.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of an oil supply device that is an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a control valve of the device.

FIG. 3 is an explanatory diagram of an encoding disc of the same device.

FIG. 4 is a flowchart showing the overall operation of the device.

FIG. 5 is a flowchart showing a preset operation of the device.

FIG. 6 is a flowchart showing a refueling operation of the apparatus at 60 liters per minute or less.

[Explanation of symbols]

 1 Tank 2 Motor Pump 3 Oil Supply Channel 4 Nozzle 5 Control Valve 6 Flow Meter 9 Preset Switch 10 Setting Switch 16 Control Means 18 Motor 20 Ball Valve 23 Encoding Disc 24, 25 Photocoupler

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shinnobu Takeuchi 1825 Amamiya, Sarahaku-shi, Nagano MK Seiko Co., Ltd. (72) Hideo Matsubayashi 1825, Amamiya, Kohei, Nagano Prefecture

Claims (1)

[Claims] 1. A pump for pumping the oil in the tank,
In the oil supply device that discharges from the nozzle via the oil supply passage,
A discharge amount detecting means for detecting a discharge amount in the oil supply passage, a valve driving means for gradually displacing the valve body from fully open to fully closed, a control valve for varying the discharge amount in the oil supply passage, and a legal safety discharge. Setting means for setting a mode for refueling with a quantity, and at the start of the refueling mode, controlling the valve driving means to set the control valve opening to a target discharge amount within a predetermined range equal to or less than the legal safe discharge amount. At a position predicted to be, during refueling in the refueling mode, the signal from the discharge amount detection means is constantly monitored, and when the discharge amount deviates from the predetermined range, the valve drive means is controlled, A refueling device, comprising: a control unit that sets the control valve opening to a position that converges to the target discharge amount.