JP3463465B2 - Refueling device - Google Patents

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 capable of uniformly using oil in a plurality of oil storage tanks, and in particular, a plurality of submerged pumps provided in each oil storage tank are provided via a common oil supply pipe. The present invention relates to an oil supply device connected to a weighing machine on a stand.

[0002]

2. Description of the Related Art One in which oil in each oil storage tank of a gas station can be used evenly is known from JP-A-64-23998. This one is effective in that each oil storage tank is connected with a siphon pipe so that there is no difference in liquid level, and the oil in each oil storage tank is used evenly.
Since it is necessary to provide a siphon tube separately, there is a disadvantage that the cost increases. In addition, when supplying oil to the oil storage tank, the siphon action is stopped, and after the replenishment is completed, the siphon action works again, so that the structure is complicated.

In order to solve this inconvenience, the applicant of the present invention, in Japanese Patent Application No. 8-67313, obtains the liquid amount from the liquid level signal of the liquid level gauge provided in each oil storage tank, and We have proposed a refueling device that preferentially drives the submerged pump of the tank. This is effective when the oil storage tanks have the same capacity, but when the oil storage tanks have different capacities, the submerged pump of the oil storage tank with a larger capacity has priority until the oil capacity of each oil storage tank becomes the same. Not only is there an inconvenience that the oil is not driven evenly but the oil is not used evenly, it is also necessary to provide an expensive liquid level gauge in each tank.

[0004]

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an oil supply device capable of uniformly using the oil in each oil storage tank even when the oil storage tanks have different capacities.

[0005]

In order to achieve the above object, the present invention is connected to a plurality of oil storage tanks, a submerged pump provided in each oil storage tank, and a discharge pipe of each submerged pump. It is composed of a plurality of weighing machines connected via a common oil supply pipe, and a pump control device that alternately outputs a drive signal to the submerged pump based on the ratio of the capacities of the oil storage tanks.

Further, the pump control device includes a tank capacity storing means for storing the capacity of each oil storage tank, a capacity ratio calculating means for calculating a ratio of the capacity stored in the tank capacity storing means, and a weighing machine. Since the pump drive means alternately outputs the drive signal to the submerged pump at the ratio calculated by the capacity ratio calculation means when receiving the oil supply request signal, each oil storage tank has a different capacity. Each submerged pump can be optimally controlled to evenly use the same oil, and there is no need for expensive level gauges in each tank.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below.
An example will be described in which the submerged pumps provided in the individual oil storage tanks are connected to a plurality of weighing machines. Figure 1
As shown in Figure 2, there are two oil storage tanks 1 below the gas station.
A and 1B are provided, and these oil storage tanks 1A and 1B are provided with submerged pumps 2A and 2B, respectively, and oil supply pipes 4A and 4B for supplying oil from a tank truck.

The discharge pipes 5A and 5B of the submerged pumps 2A and 2B are connected to a common oil supply pipe 6, and the oil supply pipe 6 is branched into a plurality of branch pipes 7A, 7B ... Are connected to inflow pipes 11A, 11B, ...

A valve 12 and a flow meter 14 are provided in the inflow pipe 11A of the weighing machine 10A, and a hose 16 having a refueling nozzle 15 attached to the tip thereof is connected. A nozzle switch for hooking the refueling nozzle 15 is provided with a nozzle switch. 17 are provided. Refueling control device 1 provided in this weighing machine 10A
8 receives a signal from the nozzle switch 17, outputs a refueling request signal to the pump control device 20 described later, resets the previous refueling amount displayed on the display 19 to zero, and outputs a valve opening signal to the valve 12. Is output. During refueling, the number of pulses from the flow rate pulse transmitter 13 of the flow meter 14 is counted and the display meter 19
It has the function of displaying.

The other weighing machines 10B ...
The structure is the same as that of 0A, and the description thereof is omitted.

On the other hand, in the office 8, there is provided a pump control device 20 which is connected to the submerged pumps 2A, 2B ... And the weighing machines 10A, 10B.

As shown in FIG. 2, this pump control device 2
0 is tank capacity storage means 21 that stores the capacities of the oil storage tanks 1A and 1B, and capacity ratio calculation means 22 that calculates the ratio of the capacities stored in the tank capacity storage means 21.
When a refueling request signal is received from each of the weighing machines 10A, 10B, ..., A drive signal is output to the submerged pumps 2A and 2B at the ratio calculated by the capacity ratio calculating means 22, and a certain number or more of refueling requests are made. The pump drive means 23 is provided for outputting drive signals to both submerged pumps when receiving signals at the same time.

Next, the operation of the oil supply device will be described. The tank capacity storage means 21 of the pump control device 20 stores the capacities of the oil storage tanks 1A and 1B in advance. For example, the oil storage tank 1A stored in the tank capacity storage means 21.
Is 10 kiloliters and the oil storage tank 1B has a capacity of 30 kiloliters, the capacity ratio calculating means 22
Then, the capacity ratio of 1: 3 is calculated by the pump driving means 23.
Submerged pump 2A of each oil storage tank 1A, 1B,
A standby state is output in which a drive signal is output to 2B at a ratio of 1: 3.

When the refueling nozzle 15 is removed from the nozzle hook for refueling, a closing signal from the nozzle switch 17 is input to the refueling control device 18, and a refueling request signal is output from the refueling control device 18 to the pump control device 20. It Then, the previous refueling amount displayed on the display 19 is reduced to zero, and the valve 12 is opened. The pump control device 20 receiving the refueling request signal from the weighing machine 10A, the submerged pumps 2A, 2B with a capacity ratio of 1: 3 calculated by the capacity ratio calculation means 22.
Then, a drive signal is output from the pump drive means 25.

That is, when a refueling request signal is input from the weighing machine, a drive signal is first output to the submerged pump 2A, and when refueling ends and the refueling request signal is deactivated, the output of the drive signal is stopped. Then, when a refueling request signal is next input from the weighing machine, a drive signal is similarly output to the submerged pump 2A. In this way, the drive signal is continuously output to the submerged pump 2A three times, and the next drive signal is output to the submerged pump 2B. Then, after that, the drive signal is output to the submerged pump 2A again for three consecutive openings.

The submerged pump 2A which receives the drive signal from the pump drive means 23 is driven, and the oil in the oil storage tank 1A is discharged from the discharge pipe 5A, the oil supply pipe 6, the branch pipe 7A, and the inflow pipe 11.
Oil is supplied to the automobile from the oil supply nozzle 15 through A, the valve 12, the flow meter 14, and the hose 16. The pulse from the flow rate pulse transmitter 13 of the flow meter 14 is supplied to the refueling controller 18
The counted amount of refueling is displayed on the display unit 19.

When refueling is completed and the refueling nozzle 15 is hung on the nozzle hook, an open signal from the nozzle switch 17 is input to the refueling control device 18, the valve 12 is closed, and the refueling control device 18 outputs it to the pump control device 20. The refueling request signal that was being issued stops. The pump control device 20 in which the refueling request signal from the weighing machine 10A is deactivated is the submerged pump 2
The drive signal to A is deenergized, and the submerged pump 2A is stopped.

It should be noted that the pump control unit 20 receives refueling request signals simultaneously from a certain number or more of weighing machines, for example, four weighing machines.
Input to the sub-merged pumps 2A, 2B of both oil storage tanks 1A, 1B from the pump drive means 25.
A drive signal is output to and driven at the same time.

[0019]

As described above, according to the present invention, a plurality of oil storage tanks, submerged pumps provided in each oil storage tank, and a common oil supply pipe connected to the discharge pipe of each submerged pump are provided. With multiple weighing machines connected,
Since it is configured with a pump control device that outputs a drive signal to the submerged pump based on the ratio of the capacity of each oil storage tank, even if the capacity is different, the oil in each oil storage tank can be used evenly, Moreover, it is not necessary to provide an expensive liquid level gauge in each oil storage tank.

[Brief description of drawings]

FIG. 1 is an overall view for explaining an oil supply device of the present invention.

FIG. 2 is a block diagram of a pump control device of the present invention.

[Explanation of symbols]

1A, 1B oil storage tank 2A, 2B submerged pump 4A, 4B oiling pipe 5A, 5B discharge pipe 6 Refueling pipe 7A, 7B Branch pipe 8 offices 10A, 10B weighing machine 11A, 11B inflow pipe 12 valves 13 Flow rate pulse transmitter 14 Flowmeter 15 Refueling nozzle 16 hoses 17 nozzle switch 18 Refueling control device 19 Display 20 Pump control device 21 Tank capacity storage means 22 Capacity ratio calculation means 23 Pump drive means

─────────────────────────────────────────────────── ─── Continuation of front page (56) Reference JP-A-63-218100 (JP, A) JP-A-2-205598 (JP, A) JP-A 59-51100 (JP, A) JP-A 48- 65511 (JP, A) JP-A-9-226900 (JP, A) Actual opening 2-1-1100 (JP, U) Actual opening 62-58400 (JP, U) Actual opening 62-188500 (JP, U) (58) Fields surveyed (Int.Cl. ⁷ , DB name) B67D 5/60

Claims (2)

(57) [Claims] 1. A plurality of oil storage tanks, a submerged pump provided in each oil storage tank, and a plurality of weighing machines connected via a common oil supply pipe connected to a discharge pipe of each submerged pump And a pump control device that alternately outputs a drive signal to the submerged pump based on the ratio of the capacities of the respective oil storage tanks. 2. The pump control device comprises a tank capacity storage means for storing the capacity of each oil storage tank, a capacity ratio calculation means for calculating a ratio of the capacities stored in the tank capacity storage means, and a weighing machine. 2. The oil supply apparatus according to claim 1, further comprising pump drive means for alternately outputting a drive signal to the submerged pump at a ratio calculated by the capacity ratio calculation means when receiving the oil supply request signal.