JPH09240799A - Oil feeding apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an oil feeding apparatus which can be used in common for a plurality of metering devices and exhibits high recovery efficiency of vapor and exhibits low cost. SOLUTION: This apparatus is constituted of a plurality of metering devices having an oil feeding system wherein a flow meter 10 is connected with an outlet pipe of a pump 8 press-carrying an oil in an oil storing tank 5 and an oil feeding hose 12 provided with an oil feeding nozzle 11 is connected with the apex of the outlet pipe of the flow meter 10 and a vapor recovery system wherein a vapor collector 16 is provided on the oil feeding nozzle 11 and a vapor hose 17 connected with the vapor collector 16 is connected with a vapor returning pipe 18. In addition, the vapor returning pipe 18 is connected with the inlet pipe 20 of a blower 19 used in common for the metering devices and flow rate control valves 22 are respectively provided in the midway of each vapor returning pipe 18 and a valve control means for controlling the amt. of opening/closing of the flow rate control valves 22 based on each instantaneous flow rate in all the metering devices connected with the blower 19 is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil supply apparatus for supplying fuel oil such as gasoline to a fuel tank of an automobile, and more particularly to an improvement of an oil supply apparatus composed of a plurality of weighing machines having an oil supply system and a vapor recovery system. It is about.

[0002]

2. Description of the Related Art A refueling device in which a plurality of weighing machines for supplying fuel oil such as gasoline to a fuel tank of an automobile are provided and the vapor recovery system of each weighing machine is connected to one blower is disclosed in JP-A-62-135190. Known as. In this refueling device, the vapor return pipe of each weighing machine is connected to the inflow pipe of the common blower, a valve is provided in the middle of each vapor return pipe, and the valve is opened in conjunction with the switch of the weighing machine. There is. In this way, the valve is always fully open during refueling, so when the instantaneous flow rate is low, a large amount of air is sucked in,
There is an inconvenience that the efficiency of the vapor processing apparatus decreases.

In order to solve this inconvenience, the applicant of the present application has proposed that a flow control valve is provided in the middle of the vapor return pipe and the opening / closing amount of this flow control valve is made variable according to the instantaneous flow rate. I applied for it on the 15th of March, but this one has a blower for each weighing machine, which is disadvantageous in that the cost increases.

[0004]

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an oil supply device which can be shared by a plurality of weighing machines, has a high vapor recovery efficiency, and is low in cost.

[0005]

In order to achieve the above object, the present invention is to connect a flow meter to a discharge pipe of a pump for pressure-feeding oil in an oil storage tank, and to supply oil to the tip of the discharge pipe of the flow meter. A plurality of weighing machines having a refueling system connected to a refueling hose provided with a nozzle and a vapor recovery system in which a vapor collector is provided at the refueling nozzle and a vapor hose connected to the vapor collector is connected to a vapor return pipe. In the oil supply device, the vapor return pipe is connected to the inflow pipe of the blower shared by the weighing machines, a flow control valve is provided in the middle of each vapor return pipe, and each of the weighing machines connected to the blower is connected. Valve control means for controlling the opening / closing amount of the flow control valve based on the instantaneous flow rate is provided.

The valve control means calculates the instantaneous flow rate from the flow rate signal from the flow rate pulse transmitter provided in the flow meter of each measuring machine, and each flow control valve for the instantaneous flow rate of each measuring machine. Storage means for storing the opening / closing amount data, a determining means for determining the opening / closing amount of each valve based on the instantaneous flow rate calculated by the calculating means and the opening / closing amount data stored in the storage means; Since the flow control valve is provided with an output unit that outputs an opening / closing signal based on the determination, a large amount of air is not sucked to reduce the efficiency of the vapor processing apparatus.

Further, since the blower control means for outputting the drive signal to the blower based on the refueling start signal from each of the weighing machines is provided, the blower is driven only when any of the weighing machines is in use. , There is no waste of energy.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to a fixed type oil supply device 2 installed on an island 1 of a gas supply station.
Then, an example of an oil supply device in which the two weighing machines 3A and 3B are incorporated in one housing 4 will be described.

As shown in FIG. 1, the oil supply system of the weighing machines 3A, 3B is a pump driven by motors 7A, 7B in the middle of oil supply pipes 6A, 6B from oil storage tanks 5A, 5B buried underground. 8A, 8B and flow rate pulse generator 9
Flowmeters 10A and 10B provided with A and 9B are interposed, and oil supply hoses 12A and 12B having oil supply nozzles 11A and 11B at their tips are connected to the oil supply pipes 6A and 6B. Nozzle hooks 13A for hanging the oil supply nozzles 11A, 11B, 1
The switch 3A is provided with switches 14A and 14B that output a refueling start signal in tandem with engagement / disengagement of the refueling nozzle. The refueling start signals from the switches 14A and 14B and the flow rate pulse signals from the flow rate pulse transmitters 9A and 9B are input to the control device 30, and the motors 7A and 7B are driven by the drive signal from the control device 30 to control the control device 30. The amount of refueling is displayed on the indicators 15A and 15B by a display signal from the.

In the vapor recovery system of the weighing machines 3A and 3B, the vapor collector 16 is connected to the oil supply nozzles 11A and 11B.
A and 16B are provided, and the vapor collectors 16A and 1B are provided.
The vapor hoses 17A and 17B connected to the 6B are connected to the inflow pipe 20 of the blower 19 via the vapor return pipes 18A and 18B.
And the outflow pipe 21 of the blower 19 is connected to the oil storage tank 5A.
It is connected to the. And vapor return pipes 18A, 18B
The flow rate control valves 22A and 22B are interposed in the middle of, and the opening degree thereof is controlled by an opening / closing signal from the control device 30.

As shown in FIG. 2, the control device 30 comprises weighing machine control means 31A and 31B, a blower control means 32, and a valve control means 33.

The weighing machine control means 31A, 31B receive the refueling start signal output from the switches 14A, 14B when the refueling nozzles 11A, 11B are removed from the nozzle hooks 13A, 13B, and display them on the indicators 15A, 15B. The previous amount of refueling that was displayed is reset to zero, and a start signal is output to the motors 7A and 7B that drive the pumps 8A and 8B. During refueling, the flow rate from the flow rate pulse transmitters 9A and 9B of the flow meters 10A and 10B. Counts the pulse and displays the count value on the display 15A, 15B
, And refuel nozzles 11A and 11B
Upon receiving the refueling end signal output from the switches 14A and 14B when it is applied to A and 13B, the start signal to the motors 7A and 7B is stopped.

The blower control means 32 is a refueling nozzle 11A,
In response to the oil supply start signal output from the switches 14A and 14B when 1B is applied to the nozzle hook 13A 13B,
An activation signal is output to the blower 19, and the refueling nozzle 11A,
When 11B is applied to the nozzle hooks 13A and 13B, the oil supply end signal output from the switches 14A and 14B is received, and the start signal to the blower 19 is stopped.

The valve control means 33 is a flow rate pulse transmitter 9A,
Calculation means 34A, 34B for receiving the flow rate pulse signal from 9B to calculate the instantaneous flow rate, and the flow rate control valve 22 for the instantaneous flow rate of the weighing machines 3A, 3B as an example in FIG.
Storage means 35 for storing data of the opening degrees of A and 22B,
Instantaneous flow rate from the calculation means 34A, 34B and the storage means 35
The valve opening / closing amount determination means 36 that outputs an opening / closing signal to the flow rate control valves 22A and 22B based on the above data.

In FIG. 6, for example, only the weighing machine 3A is used, and the instantaneous flow rate Q being discharged is 0 <Q ≦ 10.
When (L / M), the valve opening signal of 10 is output to the flow control valve 22A, and when 10 <Q ≦ 20 (L / M), the valve opening signal of 20 is output to the flow control valve 22A. Output, 20
When <Q ≦ 30 (L / M), the flow control valve 22A
Is output, and when 30 <Q (L / M), the flow control valve 22A is stored so as to output 40 valve opening signals. And, for example, weighing machines 3A, 3B
Is used together, the instantaneous flow rate Q discharged from the weighing machine 3A is 20 <Q ≦ 30 (L / M), and the instantaneous flow rate Q discharged from the weighing machine 3B is 10 <Q ≦ 20 (L / M). M)
When it is, it is stored so that the valve opening signal of 40 is output to the flow rate control valve 22A and the valve opening signal of 35 is output to the flow rate control valve 22B.

Next, the operation of the oil supply device will be described. First, the function of the weighing machine control means 31A of the control device 30 will be described based on the flow of FIG. In order to refuel from the weighing machine 3A, the refueling nozzle 11A is removed from the nozzle hook 13A, and the refueling start signal is sent from the refueling switch 14A to the weighing machine control means 31.
Input to A (S1 in FIG. 3), weighing machine control means 31A
Resets the previous oil supply amount displayed on the display 15A to zero and outputs a start signal to the drive motor 7A of the pump 8A (S2 in FIG. 3). Then, the motor 7A is started, the pump 8A is driven, and when the refueling nozzle 11A is inserted into the fuel tank of the automobile and the valve of the refueling nozzle 11A is opened, the oil in the oil storage tank 5A is replenished with the refueling pipe 6A, the pump 8A, and the flow rate. 10 in total
A is discharged from the oil supply nozzle 11A via the oil supply hose 12A. And the flow pulse generator 9A of the flow meter 10A
When the flow rate pulse from is input to the weighing machine control means 31A (S3 in FIG. 3), the flow rate pulse is counted, and the count value is output to the indicators 15A and 15B (S4 in FIG. 3) and displayed. Refueling is completed, and the refueling nozzle 11A is attached to the nozzle 13
When the fueling end signal from the switch 14A is input to the weighing machine control means 31A by being applied to A (S5 in FIG. 3), the motor 7
The activation signal to A is stopped (S6 in FIG. 3). The function of the weighing machine control means 31B is the same as the function of the weighing machine control means 31A, and thus the description thereof is omitted.

Next, the function of the blower control means 32 of the control device 30 will be described based on the flow of FIG. The blower control means 32 is watching the input of the refueling start signal from the weighing machines 3A and 3B (S1, S2 in FIG. 4), and in order to refuel from the weighing machine 3A, the refueling nozzle 11A is removed from the nozzle hook 13A, When a refueling start signal is input from the refueling switch 14A to the blower control means 32 (S4 in FIG. 4), the blower control means 32 drives the blower 19 (S4 in FIG. 4). While the blower 19 is being driven, the input of the refueling end signal is being observed (S4, S5 in FIG. 4), the refueling is completed, and the refueling nozzle 1
1A is applied to the nozzle hook 13A, and a refueling end signal from the switch 14A is input to the blower control means 32 (see FIG. 4).
S4), if the weighing machine 3B is also not refueling (Fig. 4 S
5), stop the activation signal to the blower 19 (Fig. 3 S)
6). Then, the blower 19 is stopped.

Finally, the function of the valve opening amount determining means 36 of the valve control means 33 of the control device 30 will be described based on the flow of FIG. The valve opening amount determining means 36 calculates the instantaneous flow rate of the flow rate pulse transmitter 9A of the weighing machine 3A.
Look at the range of the instantaneous flow rate from A (Fig. 5 S
1) Next, the range of the instantaneous flow rate from the calculating means 34B for calculating the instantaneous flow rate of the flow rate pulse transmitter 9B of the weighing machine 3B is checked (S2 in FIG. 5). And storage means 3
From the data stored in No. 5, the flow control valves 22A, 22
A numerical value to be output to B is selected (S3 in FIG. 5), and the value is output to the flow control valves 22A and 22B (S4 in FIG. 5). Then, the flow control valves 22A and 22B are controlled to open and close.

For example, the weighing machines 3A and 3B are used, the instantaneous flow rate from the calculating means 34A is 33 (L / M), and the instantaneous flow rate from the calculating means 34B is 25 (L / M).
When it is, the valve opening signal of 55 is output to the flow control valve 22A, and the valve opening signal of 50 is output to the flow control valve 22B.
Then, the flow rate control valve 22A is opened at an opening degree of 55,
The flow control valve 22B is opened at an opening of 50.

The embodiment of the present invention has been described above with an example in which two weighing machines are incorporated in one housing in a fixed type oil supply device installed on an island of a gas station. It may be a suspension type oil supply device that is suspended, and the same operation can be performed even if there are two or more weighing machines. Further, although the data of the opening of the flow control valve with respect to the instantaneous flow rate is stored in the storage means, the calculation formula of the opening is stored in advance,
The opening may be obtained by this calculation formula.

[0021]

As described above, according to the present invention, the flow meter is connected to the discharge pipe of the pump for pumping the oil in the oil storage tank,
A refueling system in which a refueling hose provided with a refueling nozzle at the tip is connected to the discharge pipe of the flowmeter, and a vapor collector is provided in the refueling nozzle, and a vapor hose connected to the vapor collector is connected to a vapor return pipe. In a refueling device composed of a plurality of weighing machines having a system, the vapor return pipe is connected to an inflow pipe of a blower shared by the weighing machines, a flow control valve is provided in the middle of each vapor return pipe, and a blower is provided. Since there is a valve control means for controlling the opening / closing amount of the flow control valve based on the instantaneous flow rate of all the weighing machines connected to, it can be shared by multiple weighing machines, and the vapor recovery efficiency is high, And the cost is low.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an oil supply device of the present invention.

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

FIG. 3 is a flow chart of an oil supply control means of the oil supply apparatus of the present invention.

FIG. 4 is a flow chart of a blower control means of the oil supply device of the present invention.

FIG. 5 is a flow chart of a valve opening amount determination means of the oil supply device of the present invention.

FIG. 6 is a diagram showing data stored in a storage unit of the oil supply apparatus of the present invention.

[Explanation of symbols]

 1 Island 2 Oil Supply Device 3A, 3B Weighing Machine 4 Housing 5A, 5B Oil Storage Tank 6A, 6B Oil Supply Pipe 7A, 7B Motor 8A, 8B Pump 9A, 9B Flow Rate Pulse Transmitter 10A, 10B Flow Meter 11A, 11B Oil Supply Nozzle 12A, 12B Refueling hose 13A, 13B Nozzle hook 14A, 14B Switch 15A, 15B Display 16A, 16B Vapor collector 17A, 17B Vapor hose 18A, 18B Vapor return pipe 19 Blower 20 Inflow pipe 21 Outflow pipe 22A, 22B Flow control valve 30 Control device 31A, 31B Weighing machine control means 32 Blower control means 33 Valve control means 34A, 34B Computing means 35 Storage means 36 Valve opening amount determination means

Claims (3)

[Claims] 1. A refueling system in which a flow meter is connected to a discharge pipe of a pump for pumping oil in an oil storage tank, and a refueling hose having a refueling nozzle at a tip thereof is connected to the discharge pipe of the flow meter, and the refueling nozzle. In a refueling device comprising a plurality of weighing machines having a vapor collector and a vapor recovery system in which a vapor hose connected to the vapor collector is connected to the vapor return pipe, the vapor return pipe is a blower common to the weighing machines. Valve control means for controlling the opening / closing amount of the flow control valve based on each instantaneous flow rate of all the weighing machines connected to the blower. An oil supply device characterized by being provided. 2. The valve control means calculates a momentary flow rate from a flow rate signal from a flow rate pulse transmitter provided in a flow meter of each measuring machine, and each flow control valve for the instantaneous flow rate of each measuring machine. Storage means for storing the opening / closing amount data, a determining means for determining the opening / closing amount of each valve based on the instantaneous flow rate calculated by the calculating means and the opening / closing amount data stored in the storage means; The oil supply device according to claim 1, further comprising an output unit that outputs an opening / closing signal to the flow rate control valve based on a determination. 3. The oil supply device according to claim 1, further comprising blower control means for outputting a drive signal to the blower based on an oil supply start signal from each of the weighing machines.