JP3317337B2 - Vapor recovery system for refueling equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vapor collecting device used for a fueling device, and more particularly to a vapor collecting device suitable for a fueling device having a plurality of fueling nozzles.

[0002]

2. Description of the Related Art Conventionally, in a refueling device for supplying a highly volatile fuel oil such as gasoline to a fuel tank of an automobile or the like, a suction blower is used to collect a large amount of vapor generated in the fuel tank. The provided vapor recovery device is used. For example, Japanese Patent Publication No. 7-77918 discloses that a fluid motor is provided in a part of an oil supply line from an oil supply pump to an oil supply nozzle, and one of a vapor recovery line from the oil supply nozzle to a vapor discharge end. A vapor suction blower having the same shape as the fluid motor is disposed in the part, and the vapor suction blower is connected to the fluid motor via a speed increasing gear and a one-way clutch, so that the vapor suction blower is provided. Discloses a vapor recovery device that applies a vapor suction force exceeding the oil supply amount to the fuel supply.

[0003]

However, the conventional vapor collecting apparatus has a mechanism for rotating the fluid motor by the flow of the fluid and driving the vapor suction blower by the fluid motor to collect the vapor.
2. Description of the Related Art In an oil supply device that supplies a plurality of oil types, a fluid motor and a vapor suction blower are required for each oil supply nozzle.

[0004] The present invention has been made in view of the above circumstances,
It is an object of the present invention to provide a vapor recovery device for a fueling device, which can be reduced in size and inexpensive to manufacture.

[0005]

In order to achieve the above object, the present invention provides a vapor recovery device for a fueling device, comprising a fueling pump and a flow meter in a fueling pipe line for guiding fuel oil in an underground tank to a fueling nozzle. A plurality of connected refueling mechanisms and a vapor collection device of a refueling device in which a vapor suction blower is disposed in a conduit of a vapor collection pipe having one end opened to each of the refueling nozzles; Are the same rotor driven by one motor
A flow rate pulse transmission comprising a vane type pump disposed on a shaft, a variable valve provided on each side of the vapor suction port of the vapor suction blower, and the variable valve provided on a flow meter of each oil supply mechanism. To the signal from the vessel
It is characterized in that the control device for controlling a more open position is provided. The vapor suction blower is 1
The motors are arranged on the same shaft driven by two electric motors, and the open / close position is controlled by a variable valve on the side of the vapor suction port in accordance with the discharge amount.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to an embodiment shown in the drawings. FIG. 1 is a cross-sectional view of a vapor recovery apparatus according to an embodiment of the present invention, and FIG.
FIG . 3 is a side view of the collecting device, and FIG . 3 is a diagram illustrating a piping system and a control system of an oil supply device including the vapor collecting device according to the embodiment of the present invention.

In these figures, an oil supply device 10 according to the present embodiment is a device for supplying a plurality of oil types such as high octane gasoline, regular gasoline or light oil (in the embodiment, an apparatus for supplying two oil types). And oil supply pipes 11 for guiding fuel oil in an underground tank (not shown) to oil supply nozzles 12, 12.
In each of the pipes 1, there are provided oil supply pumps 13 and 13 driven by pump motors to feed fuel oil in the underground tank toward the oil supply nozzles 12 and 12 and flow meters 14 and 14 for measuring the amount of oil supply, respectively. They are arranged in order from the upstream side. In addition, vapor recovery pipes 18, 18, each of which has one end opened at the tip of the cylinder of the fuel supply nozzles 12, suck the vapor in the fuel tank by a vapor recovery device 20 provided in the middle of the pipeline, and from the vapor discharge end thereof. It is configured to be collected in an underground tank or a vapor processing device. The vapor collecting device 20 includes vapor collecting tubes 18, 18.
And a variable valve 30 provided on the side of the vapor suction port of each of the vapor suction blowers 20a and 20b. It is configured. The variable valve 30 can control the opening and closing of the valve according to the discharge amount. Flow rate transmitters 15, 15 are attached to the flow meters 14, 14, respectively. The signals from the flow rate pulse transmitters 15, 15 are converted into an oil supply amount and a discharge amount by the control device 16, and the oil supply amount is changed. The discharge amount is displayed on the displays 16 and 16 and the discharge amount is
The opening degree of 0, 30 is controlled. Further, an on / off signal of a nozzle switch SW provided near the nozzle hooks 19, 19 is input to the control device 16 to control the pump motor, the variable valves 30, 30, the electric motor 21, and the like. I have.

[0008] The vapor suction blowers 20a and 20b of the vapor collecting device 20 are each composed of a vane type pump.
One blower is integrally configured, and one motor 2
1 are arranged on the same rotor shaft 22 driven by the same. That is, one end of the rotor shaft 22 is driven by the electric motor 21, and cam rings 23a and 23b constituting a vapor suction blower main body are arranged side by side on the other end, and the rotors in the respective cam rings 23a and 23b are arranged. Rotors 24a and 24b are attached to the shaft 22, and the vanes 2 are inserted into grooves formed radially on the rotors 24a and 24b.
5a and 25b are attached so as to be able to enter and exit freely. In the vane type pump, the vanes 25a, 25b fly radially by centrifugal force due to the rotation of the rotors 24a, 24b.
The distal end thereof slides while contacting the inner peripheral surfaces of the cam rings 23a and 23b. In the cam rings 23a and 23b of the vapor suction blower main body, for example, a vapor suction port 26 having a threaded connection portion is provided.
a, 26b and vapor discharge ports 27a, 27b, respectively. Further, the vapor inlet 26a,
Frame arresters 28a and 28b are attached to 26b and vapor discharge ports 27a and 27b, respectively.

[0009] The vapor recovery device 2 of the oil supply device having the above configuration.
At 0, for example, when the refueling nozzle 12 is removed from one of the nozzle hooks 19, inserted into a refueling port of an automobile or the like, and the lever is pulled, the refueling pump 13 driven by the pump motor causes the refueling pump 13 to move out of the underground tank. Fuel oil is pumped up through a fuel supply pipe 11 and sent into a fuel tank via a fuel supply nozzle 12. On the other hand, the control device 16 receives the ON signals from the nozzle switches SW, SW, drives the electric motor 21 to rotate, and outputs a valve opening signal to the variable valve 30. Then, by controlling the opening of the variable valve 30 in accordance with the discharge amount calculated from the signals from the flow rate pulse transmitters 15 and 15, the vapor generated by refueling is supplied to the fuel tank by the vapor suction blower 20a (or 20b). It is sucked from inside according to the discharge amount, and is collected in the underground tank or the vapor processing device through the burper collection pipe 18. When the refueling nozzle 12 is put on the nozzle hook 19, an OFF signal is output from the nozzle switches SW and SW. In response to this signal, the control device 16 outputs a valve closing signal to the variable valve 30 to refuel. finish. In the case of refueling with both refueling nozzles 12, the control device 16 similarly drives the electric motor 21 to rotate and controls the opening of the respective variable valves 30, 30 according to the discharge amount. As a result, the vapor generated by refueling is sucked from the fuel tank by the vapor suction blowers 20a, 20b, and is collected in the underground tank or the vapor processing device through the vapor recovery pipes 18, 18, respectively. The vapor collecting device 20 is provided with the vapor suction blower 2 on the same axis as the rotor shaft 22 driven by one electric motor 21.
0a and 20b are arranged, and variable valves 30 and 3 for controlling the opening corresponding to the discharge amount are provided on the respective vapor suction ports.
Since 0 is provided, the entire lubricating apparatus can be reduced in size as compared with a case where a fluid motor and a vapor suction blower are provided for each lubricating mechanism, and the number of parts can be reduced and the lubricating apparatus can be manufactured at low cost. Further, since the vapor suction blowers of the same mechanism are arranged in parallel on the same axis as the rotor shaft 22, the number of the vapor suction blowers can be easily increased or decreased according to the number of the oiling mechanisms.

Although the present embodiment has been described with reference to the lubricating apparatus 10 having two lubricating mechanisms as an example, in the lubricating apparatus having two or more lubricating mechanisms, one rotor shaft 2 is provided.
It suffices to provide vapor suction blowers corresponding to the number of lubrication mechanisms on the same axis. The vapor suction blowers 20a and 20b of the vapor collecting device 20 are constituted by vane type pumps, but can be applied to other types of pumps. Furthermore, the attachment of the pipe of the vapor recovery apparatus 20 has been described using the screw-type connection part as an example, but a flange-type connection part may be used, and the shape is not limited to the embodiment.

[0011]

As described above, in the vapor collecting apparatus of the oil supply apparatus according to the present invention, the vapor suction blowers are disposed on the same shaft driven by one electric motor, and are discharged to the vapor suction port side. Since the open / close position is controlled by the variable valve according to the quantity, the size can be reduced as a whole and the manufacturing can be performed at low cost.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a vapor recovery device according to an embodiment of the present invention.

FIG. 2 It is a side view of the vapor collection device of this embodiment.
You.

FIG. 3 is a diagram illustrating a piping system and a control system of an oil supply device including a vapor recovery device according to the embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 oil supply device 11 oil supply pipe 12 oil supply nozzle 13 oil supply pump 14 flow meter 15 flow rate pulse transmitter 16 control device 17 indicator 18 vapor collection pipe 19 nozzle hook 20 vapor collection device 20a, 20b vapor suction blower 21 electric motor 22 rotor shaft 23a , 23b Cam ring 24a, 24b Rotor 25a, 25b Vane 26a, 26b Vapor suction port 27a, 27b Vapor discharge port 28a, 28b Frame arrestor 30 Variable valve 31 Nozzle switch

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B67D 5/378

Claims (1)

(57) [Claims] 1. A plurality of refueling mechanisms in which a refueling pump and a flow meter are connected to a refueling pipe line for guiding fuel oil in an underground tank to a refueling nozzle, and a vapor collection pipe having one end opened to each of the refueling nozzles. In a vapor collecting device of an oil supply device in which a vapor suction blower is disposed in each of the pipelines, each of the vapor suction blowers is a vane type pump disposed on the same rotor shaft driven by one electric motor.
A variable valve is provided on the vapor suction port side of the vapor suction blower, and the variable valve is provided on a flow meter of each oil supply mechanism.
A vapor recovery device for a refueling device, comprising a control device for controlling an opening / closing position by a signal from a pulse transmitter .