JPH107198A - Oil feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an oil feeder through which oil in respective oil storage tanks can be evenly used even when the capacities of the oil storage tanks are different from each other. SOLUTION: This oil-supply device is constituted of a plurality of oil storage tanks 1A, 1B, oil level meters 3A, 3B and submergible pumps 2A, 2B equipped in the storage tanks, a plurality of scales 10A, 10B connected through a common oil-supply pipe connected to the discharge pipes of respective submerged pumps, and a control device 20 operating the left volume ratio of respective oil storage tanks on the basis of the signal from respective oil level meters and outputting a driving signal to the submergible pump of a oil storage tank having a high left volume ratio when the controller has received an oil-supplying demand signal from the scales 10A, 10B.

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 which makes it possible to use oil in a plurality of oil storage tanks evenly. In particular, a plurality of submergeable pumps provided in each oil storage tank are provided through a common oil supply pipe. The present invention relates to a refueling device connected to a weighing machine.

[0002]

2. Description of the Related Art Japanese Patent Application Laid-Open No. 64-23998 discloses a system in which oil in each oil storage tank of a gas station can be used evenly. This 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 equally.
It is necessary to provide a separate siphon tube, which is disadvantageous in that the cost increases. In addition, it has a complicated structure to stop the siphon action when replenishing oil to the oil storage tank, and to activate the siphon action again after the replenishment is completed.

In order to solve this inconvenience, the applicant of the present application has disclosed in Japanese Patent Application No. 8-67313, the liquid level is obtained from the liquid level signal of a liquid level gauge provided in each oil storage tank, and the oil storage with a large liquid amount is determined. A refueling device that preferentially drives a submerged pump of a tank is proposed. This is effective when the capacity of each oil storage tank is the same, but when the capacity is different, the submerged pump of the oil storage tank with a large capacity has priority until the oil quantity of each oil storage tank becomes the same. And the oil is not used evenly.

[0004]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an oil supply device capable of uniformly using 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 provides a plurality of oil storage tanks, a liquid level gauge and a submerged pump provided in each oil storage tank, and a discharge pipe of each submerged pump. Calculates the remaining ratio of each oil storage tank based on signals from multiple weighing machines connected via a common oil supply pipe connected to the And a control device for outputting a drive signal to the submerged pump of the oil storage tank having a high remaining ratio when received.

The control device includes a calculation data storage means for storing data for calculating a liquid amount of each oil storage tank, a calculation data stored in the calculation data storage means, and a liquid level signal of a liquid level gauge. Liquid amount calculating means for calculating the liquid amount from the tank capacity storing means storing the capacity of each oil storage tank, the capacity stored in the tank capacity storing means and the liquid amount calculated by the liquid amount calculating means Ratio calculating means for calculating the remaining amount ratio, comparing means for comparing the remaining amount ratio of each oil storage tank calculated by the ratio calculating means, and a remaining amount ratio when receiving a refueling request signal from the weighing machine. Pump drive means for outputting a drive signal to the submerged pump of the high oil storage tank, even if the capacity is different,
Each submerged pump can be optimally controlled so that the oil in each oil storage tank is used equally.

Further, the control device comprises a liquid amount display control section and a pump control section. The liquid amount display control section includes calculation data storage means for storing data for calculating the liquid amount of each oil storage tank; Liquid amount calculating means for calculating the liquid amount from the calculation data stored in the calculation data storing means and the liquid level signal of the liquid level gauge; tank capacity storing means for storing the capacity of each oil storage tank; Ratio calculating means for calculating a remaining amount ratio from the capacity stored in the means and the liquid amount obtained by the liquid amount calculating means; and outputting the remaining amount ratio calculated by the ratio calculating means to a pump control section. Output means, and a display signal output means for outputting a value calculated by the liquid amount calculation means and the ratio calculation means to a display, wherein the pump control unit controls each of the oil storages inputted from the liquid amount display control unit. The ratio of the remaining amount of the tank The liquid amount display control device includes a comparison means for comparing and a pump drive means for outputting a drive signal to a submerged pump of the oil storage tank having a high remaining ratio when receiving a refueling request signal from the weighing machine. Indicates the liquid amount and the remaining amount ratio of each oil storage tank, which facilitates inventory management.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of the present invention will be described with reference to FIG.
An example will be described in which submerged pumps provided in individual oil storage tanks are connected to a plurality of weighing machines. FIG.
As shown in the figure below, two oil storage tanks 1
A and 1B are provided, and these oil storage tanks 1A and 1B are respectively provided with submerged pumps 2A and 2B, liquid level gauges 3A and 3B for measuring the liquid level in the oil storage tank, and an oil supply pipe for supplying oil from the tank lorry. 4A and 4B are provided.

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

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

The other weighing machines 10B are also weighing machines 1
The structure is the same as that of 0A, and the description is omitted.

On the other hand, in the office 8, the submerged pumps 2A, 2B...
A, 10B,... Are provided with a control device 20 connected by signal lines, and a display 29 for receiving a display signal from the control device 20 and displaying a liquid amount and a remaining amount ratio is provided.

As shown in FIG. 2, this control device 20
It comprises a liquid amount display control section 21 and a pump control section 30. The liquid amount display control unit 21 controls each oil storage tank 1A, 1
A calculation data storage means 23 storing data for calculating the liquid amount of B, and a liquid for calculating the liquid amount from the calculation data stored in the calculation data storage means 23 and the liquid level signals of the liquid level gauges 3A and 3B. Amount calculation means 24A, 24B and tank capacity storage means 25 storing the capacity of each oil storage tank 1A, 1B
Ratio calculating means 26A, 26B for calculating a remaining amount ratio based on the capacity stored in the tank capacity storing means 25 and the liquid amount calculated by the liquid amount calculating means 24A, 24B;
An output unit 27 for outputting the remaining amount ratio calculated by the ratio calculating units 26A and 26B to the pump control unit 30, the liquid amount calculating units 24A and 24B and the ratio calculating units 26A and 26
Display signal output means 28 for outputting the value calculated in B to the display 29.

The pump control unit 30 includes a comparison unit 31 for comparing the ratio of the remaining amount of each of the oil storage tanks 1A and 1B input from the liquid amount display control unit 21 with the measuring devices 10A and 10B.
When a refueling request signal is received from B ..., a drive signal is output to the submerged pump 2A or 2B of the oil storage tank having a high remaining amount ratio. The submerged pump 1A or 1B of the oil storage tank having a low volume ratio is also provided with a pump drive unit 32 that outputs a drive signal.

Next, the operation of the refueling device will be described. Liquid amount calculating means 24A, 24 of liquid amount display control unit 21 of control device 20
B receives the liquid level data from the liquid level gauges 3A and 3B, calculates the liquid amount by a calculation formula stored in the calculation data storage unit 23, and calculates the calculated liquid amount by the ratio calculation units 26A and 26B.
To the display 29 via the display signal output means 28. Then, the ratio calculating means 26A, 26B stores each of the oil storage tanks 1 stored in the tank capacity storing means 25.
A, 1B, and the remaining amount ratios of the oil storage tanks 1A, 1B are calculated from the liquid amounts calculated by the liquid amount calculating means 24A, 24B, and the calculated remaining ratios are pumped through output means 27. The signal is output to the comparison means 31 of the control unit 30 and output to the display 29 via the display signal output means 28. The display 29 displays numerical values or graphs of the liquid amount and the remaining amount ratio based on display signals from the liquid amount calculating means 24A, 24B and the ratio calculating means 26A, 26B.

The comparing means 31 of the pump control section 30 compares the remaining oil ratios of the oil storage tanks 1A, 1B with the remaining amount ratios from the ratio calculating means 26A, 26B and outputs the same to the pump driving means 32. Receiving the signal, the pump driving means 32
Are in a standby state in which when receiving a refueling request signal from the weighing machines 10A, 10B,..., A drive signal is output to an oil storage tank having a high remaining ratio, for example, the submerged pump 2A of the oil storage tank 1A.

When the refueling nozzle 15 of the weighing machine 10A 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 transmitted from the refueling control device 18 to the control device 20. Output to Then, the previous refueling amount displayed on the indicator 19 is returned to zero, and the valve 12 is opened. The pump drive unit 32 of the pump control unit 30 of the control device 20 that has received the refueling request signal from the weighing machine 10A outputs a drive signal to the submerged pump 2A of the oil storage tank 1A having a high remaining amount ratio as described above.

The submerged pump 2A, which has received the drive signal from the pump drive means 32, 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, the inflow pipe 11
A, the valve 12, the flow meter 14, and the hose 16 are supplied to the vehicle through the fuel supply nozzle 15. Then, the pulse from the flow rate pulse transmitter 13 of the flow meter 14
And the counted refueling amount is displayed on the indicator 19.

When refueling is completed and the refueling nozzle 15 is put 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 to the control device 20. The refueling request signal that has been running stops. Pump driving means 32 of the pump control unit 30 of the control device 20 in which the refueling request signal from the weighing machine 10A is deactivated.
Deactivates the drive signal to the submerged pump 2A,
The submerged pump 2A stops.

If a refueling request signal is simultaneously input to the control device 20 from a certain number or more of weighing machines, for example, four weighing machines 10A, 10B,... A drive signal is also output from the pump driving means 32 to the submergeable pump 2B, and both submergeable pumps 2A and 2B are simultaneously driven.

[0021]

As described above, the present invention provides a plurality of oil storage tanks, a level gauge and a submerged pump provided in each oil storage tank, and a common oil supply connected to the discharge pipe of each submerged pump. Calculates the remaining amount ratio of each oil storage tank based on signals from multiple weighing machines connected via pipes and each level gauge, and calculates the remaining amount ratio when receiving a refueling request signal from the weighing machine. And a control device that outputs a drive signal to the submerged pump of the high oil storage tank, so that the oil in each oil storage tank can be used evenly even when the capacity is different.

[Brief description of the drawings]

FIG. 1 is an overall view for explaining a fuel 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 3A, 3B Level gauge 4A, 4B Lubrication pipe 5A, 5B Discharge pipe 6 Refueling pipe 7A, 7B Branch pipe 8 Office 10A, 10B Measuring machine 11A, 11B Inflow pipe 12 valve Reference Signs List 13 flow pulse transmitter 14 flow meter 15 refueling nozzle 16 hose 17 nozzle switch 18 refueling control device 19 indicator 20 control device 21 display control unit 23 calculation data storage means 24A, 24B liquid amount calculation means 25 tank capacity storage means 26A, 26B Ratio calculation means 27 Output means 28 Display signal output means 29 Display 30 Pump control unit 31 Comparison means 32 Pump drive means

Claims (3)

[Claims] 1. A plurality of oil storage tanks, a plurality of oil level gauges and submerged pumps provided in each oil storage tank, and a plurality of oil tanks connected via a common oil supply pipe connected to a discharge pipe of each submerged pump. Calculates the remaining amount ratio of each oil storage tank based on the signal from each level gauge and each level gauge. An oil supply device comprising a control device that outputs a drive signal. 2. The control device according to claim 1, further comprising: calculation data storage means storing data for calculating a liquid amount of each oil storage tank; calculation data stored in the calculation data storage means; and a liquid level signal of a liquid level gauge. Liquid amount calculating means for calculating the liquid amount from the tank capacity storing means storing the capacity of each oil storage tank, the capacity stored in the tank capacity storing means and the liquid amount calculated by the liquid amount calculating means Ratio calculating means for calculating the remaining amount ratio, comparing means for comparing the remaining amount ratio of each oil storage tank calculated by the ratio calculating means, and a remaining amount ratio when receiving a refueling request signal from the weighing machine. 2. The fuel supply device according to claim 1, further comprising: a pump drive unit that outputs a drive signal to a submerged pump of the oil storage tank having a high height. 3. The control device includes a liquid amount display control unit and a pump control unit. The liquid amount display control unit includes a calculation data storage unit that stores data for calculating a liquid amount of each oil storage tank; Liquid amount calculating means for calculating the liquid amount from the calculation data stored in the calculation data storing means and the liquid level signal of the liquid level gauge; tank capacity storing means for storing the capacity of each oil storage tank; Ratio calculating means for calculating a remaining amount ratio from the capacity stored in the means and the liquid amount obtained by the liquid amount calculating means; and outputting the remaining amount ratio calculated by the ratio calculating means to a pump control section. Output means, and a display signal output means for outputting a value calculated by the liquid amount calculation means and the ratio calculation means to a display, wherein the pump control unit controls each of the oil storages inputted from the liquid amount display control unit. Compare the remaining tank ratio 2. A refueling apparatus according to claim 1, further comprising: a comparing means, and a pump driving means for outputting a driving signal to a submerged pump of the oil storage tank having a high remaining ratio when receiving a refueling request signal from the weighing machine.