JP6724940B2 - Suspended refueling device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspension type refueling device, and more particularly to a suspension type refueling device installed in a fueling station for supplying fuel oil to an automobile or the like and having a function of collecting fuel oil vapor flowing out from a fuel tank of the automobile or the like during refueling. Regarding

The suspension type refueling device includes a refueling hose processing device that holds a refueling nozzle connected to a tip of a refueling hose so as to be able to move up and down, and supplies fuel oil to a fuel tank of an automobile by the lowered refueling nozzle.

In the oil supply device including the suspension type oil supply device, since fuel oil having a high volatility such as gasoline is supplied to a fuel tank of an automobile or the like, fuel oil vapor corresponding to the amount of oil supply flows out from the fuel tank. When this fuel oil vapor is released into the atmosphere, not only resources are wasted, but there is also a risk of causing a fire due to ignition and environmental pollution.

In view of this, the present applicant has proposed in Patent Document 1 a suspension type oil supply device in which a vapor recovery hose is wrapped around an oil supply hose, and vapor sucked from a vapor recovery nozzle is returned to an underground tank.

On the other hand, the applicant of the present application discloses in Patent Document 2 that the fuel oil vapor flowing out from a fuel tank of an automobile or the like during refueling is sucked by a compression pump, the sucked fuel oil vapor is cooled by a condenser, and liquefied fuel oil is discharged. Vapor liquefaction recovery reduces environmental impact by collecting unliquefied fuel oil vapor on the surface of the adsorbent, desorbing the adsorbed fuel oil vapor, and sending it again to the condenser for reuse. A refueling device with a system was proposed.

JP 61-47399 A JP, 2017-077903, A

When the vaporization liquefaction recovery system described in Patent Document 2 is provided in the suspension type oil supply device described in Patent Document 1 to liquefy and recover the vapor, the oil supply hose or the oil supply pipe of the suspension type oil supply device is not a suspension type. Since it is longer than that of the refueling device, there is a risk that the vapor will be liquefied in the vapor recovery pipe in winter when the temperature is low and the compression pump will suck the liquid and damage it.

Then, this invention is made|formed in view of the said conventional problem, and an object of this invention is to provide the suspension type oil supply apparatus which can collect|recover a vapor, preventing damage to a compression pump etc.

In order to achieve the above-mentioned object, a suspension type oil supply apparatus of the present invention has an oil supply pipe having one end connected to an oil storage tank and the other end connected to an oil supply hose having an oil supply nozzle, and an oil supply interposed in the oil supply pipe. A refueling system having a pump and a flow meter, a refueling hose processing device that winds the refueling hose around a take-up reel and holds the refueling nozzle so that the refueling nozzle can move up and down, and a vapor return with one end opening near the refueling nozzle. A vapor liquefaction recovery device having a suction means interposed in the pipe, and a liquid inflow prevention means for preventing the liquid from flowing into the suction means on the upstream side of the suction means of the vapor return pipe , The take-up reel of the refueling hose processing device is formed separately from a fuel oil passage and a vapor passage that communicate with the fuel oil passage and the vapor passage of the refueling hose separately, and the fuel oil passage and the vapor passage are separately formed, and one end of the take-up reel is formed. is connected to the equipment to be attached to the filling nozzle, characterized Rukoto a cable passage for accommodating a part of the signal line to which the other end is connected to the power supply.

According to the suspension type oil supply apparatus of the present invention, the suspension type oil supply apparatus is operated in a low temperature environment because the liquid inflow prevention means for preventing the liquid from flowing into the suction means is provided upstream of the suction means of the vapor return pipe. In this case, even if the vapor is liquefied in the vapor recovery pipe, the liquefied vapor is not sucked by the suction means, so that the compression pump or the like as the suction means can be prevented from being damaged. Further, even if the take-up reel rotates, it is possible to maintain the state in which the fuel oil passage and the vapor passage of the refueling hose communicate with the fuel oil passage and the vapor passage, and prevent the signal line from being broken. it can.

In the above suspension type oil supply device, the liquid inflow prevention means is provided with a housing having an inflow port and a gas outflow port in an upper part and a liquid outflow port in a lower part, and an inflow side chamber and an outflow side chamber are formed in the housing, and The liquid inflow prevention means may be provided with a plurality of the ventilation holes, and the ventilation holes located at the upper part of the ventilation holes may have a pressure inside the inflow side chamber. It is possible to provide a valve that opens when a predetermined value is reached . Thus, the fuel oil liquefied by the vapor can be separated from the vapor with a simple configuration. Further, when the ventilation hole is formed in the upper part of the shielding plate, the mixture of the fuel oil and the vapor flowing from the inflow port may flow through the inflow side chamber and the outflow side chamber and flow out from the gas outflow port without colliding with the shielding plate. On the contrary, unless the vent hole is formed in the upper part of the shield plate, when the fuel oil concentration of the mixture flowing in from the inlet is high, the fuel oil separated by the collision with the shield plate blocks the vent hole and vapor May not flow to the outflow side chamber. However, according to the present invention, only when the fuel oil concentration of the mixture flowing in from the inflow port is high, the pressure in the inflow chamber rises and the valve is opened due to the obstruction of the vent hole by the fuel oil, so that the valve is located above the shielding plate. The vapor can be caused to flow into the outflow side chamber through the ventilation hole, and flow out from the gas outlet.

In the suspension refueling device, the liquid inflow prevention means is provided with a pressure sensor for detecting the pressure in the inflow side chamber, and the pressure sensor detects that the pressure in the inflow side chamber has reached a predetermined value, The suction means can be stopped. This prevents the fuel oil from being sucked into the suction means even when the fuel oil has entered the vapor passage from the fuel oil passage of the fuel supply hose, so that damage to the compression pump, etc. can be prevented more reliably. You can

In the suspension-type oil apparatus, the power source side end portion of the inlet and the cable passage before Symbol fuel oil passage formed on the rotation axis of said take-up reel, a vapor passage formed in the take-up reel, It can be configured to be connected to the vapor return pipe via a stator that is rotatably attached to the take-up reel .

As described above, according to the present invention, it is possible to provide a suspension type oil supply device capable of collecting vapor while preventing damage to the compression pump and the like.

It is a schematic diagram showing one embodiment of a suspension type oil supply device concerning the present invention. It is a block diagram which shows the structure of a part of suspension type oil supply apparatus shown in FIG. The gas-liquid separation device as a liquid inflow prevention means shown in FIG.1 and FIG.2 is shown, (a) is a front sectional view, (b) is the sectional view on the AA line of (a). It is a figure for explaining the concrete composition of the hose processing device of the suspension type oil supply device shown in Drawing 1, and is a perspective view showing a hose reel etc. as a winding reel in a hose processing device. It is a figure which shows a part of hose reel shown in FIG. 4, (a) is a partially broken front view, (b) is a BB line sectional view of (a), (c) is C of (a). It is a C line sectional view.

Next, modes for carrying out the present invention will be described in detail with reference to the drawings.

1 and 2 show an embodiment of a suspension type oil supply device according to the present invention. This suspension type oil supply device 1 includes an oil supply pipe 2 and a ventilation pipe 3 connected to an oil storage tank T, and an oil supply pipe 2. The main body of the refueling device 4, the hose processing device 6 attached to the canopy 5, and the refueling nozzle 7 suspended from the hose processing device 6 and connected to the refueling port of the fuel tank of the automobile V at the tip. An oil supply hose 8 and a vapor liquefaction recovery device 9 are provided.

The refueling device main body 4 accommodates a part of the refueling pipe 2 extending from the oil storage tank T to the canopy 5, and the refueling pipe 2 to be housed therein includes a refueling pump 11, a solenoid valve 12, and a solenoid valve 12 as shown in FIG. A flow meter 13 is arranged.

Returning to FIG. 1, the hose processing device 6, which will be described in detail later, is provided for holding the refueling nozzle 7 so as to be able to move up and down by winding the refueling hose 8 around a hose reel (winding reel).

The refueling nozzle 7 is provided with a vapor collecting function, and the refueling hose 8 is provided with a vapor passage. This vapor passage is connected to a vapor return pipe 15 extending from the canopy 5 toward the vapor recovery device 9. Here, by forming the vapor passage inside the fuel supply hose 8 and the fuel oil passage outside, it is possible to prevent the vapor in the vapor passage from liquefying due to a decrease in the outside air temperature.

The vapor return pipe 15 between the canopy 5 and the vapor recovery device 9 is provided with a gas-liquid separator (liquid inflow prevention means) 20 for separating the liquid from the vapor flowing into the vapor recovery device 9. As shown in FIG. 3, the gas-liquid separation device 20 includes a housing 21 having an inflow port 21a and a gas outflow port 21b in the upper part, and a liquid outflow port 21c in the lower part, and an inflow side chamber 21d and an outflow side chamber in the housing 21. A shield plate 22 forming 21e, a float valve 23 arranged at the liquid outlet 21c, a pressure sensor 24 for notifying when the inside of the inflow side chamber 21d reaches a predetermined pressure, and the like.

At the bottom of the housing 21, a rising portion 21f and a liquid pool portion 21g are formed. A stopper 25 that supports the float valve 23 from below is arranged inside the rising portion 21f, and a position above the stopper 25 of the rising portion 21f communicates with the liquid outlet 21c when the float valve 23 floats. A hole 21h is formed.

The shielding plate 22 is provided with first and second openings (ventilation holes) 22a and 22b through which vapor passes, and the second opening 22b has a pressure of a predetermined value or more from the inflow side chamber 21d side. A valve 26 is provided that is biased by the biasing means 27 from the outflow side chamber 21e side to the inflow side chamber 21d so as to be opened when the valve is applied. The shielding plate 22 forms a gap C between itself and the rising portion 21f.

As shown in FIGS. 1 and 2, the vapor liquefaction recovery device 9 is installed in a vapor return pipe 15, and as shown in FIG. 2, a compression pump (suction means) 30 and a gasoline vapor (hereinafter referred to as “vapor”). ), a gas-liquid separation measuring tank which is arranged in the vicinity of the condenser 31 and separates a mixture of vapor, air, gasoline and water discharged from the condenser 31 into gas, gasoline and water, respectively. 32 and two adsorbents arranged on both sides of the condenser 31 and the gas-liquid separation measuring tank 32 for adsorbing vapor from the gas discharged from the gas-liquid separating measuring tank 32 and then desorbing it and returning it to the condenser 31. The towers 34A and 34B are provided. A space (hereinafter referred to as “cooling unit”) 35 that houses the condenser 31 and the two adsorption towers 34A and 34B is filled with gasoline as a cooling liquid.

In the gas-liquid separation measuring tank 32, gas is supplied to a gasoline return valve 36 for returning gasoline to the oil supply pump 11 side and one of the adsorption towers 34A and 34B, and the gas is supplied from the other one of the adsorption towers 34A and 34B. A switching valve 37 that switches the flow path so that the vapor is supplied is additionally provided.

The two adsorption towers 34A and 34B are filled with an adsorbent such as silica gel, zeolite, or activated carbon. In each of the adsorption towers 34A, 34B, a check valve 38 for introducing outside air into the adsorption towers 34A, 34B to convey vapor, and a relief for keeping the pressure in the adsorption towers 34A, 34B below a predetermined value. The valves 39 and 39 are attached respectively.

By winding a heat insulating material around the vapor return pipe 15, it is possible to prevent the vapor in the vapor return pipe 15 from liquefying due to a decrease in the outside temperature.

Next, the vapor recovery operation of the suspension type oil supply apparatus 1 having the above configuration will be briefly described with reference to FIGS. 1 to 3.

When the oil supply pump 11 is turned on and the oil supply is started, gasoline G1 is supplied from the oil storage tank T to the cooling unit 35 to cool the condenser 31 and the two adsorption towers 34A and 34B in the cooling unit 35. The cooled gasoline G2 is mixed with gasoline recovered from a gas-liquid separation measuring tank 32 described later via a gasoline return valve 36, and returned to the fuel pump 11 as gasoline G3. After that, the gasoline G4 is actually supplied to the vehicle through the refueling nozzle 7 and the like. The amount of oil supplied by the oil supply pump 11 is measured by the flow meter 13.

When the supply of gasoline from the refueling nozzle 7 is started, the compression pump 30 is turned on, and the vapor generated by refueling and the air in the fuel tank of the vehicle are introduced into the gas-liquid separation device 20 via the vapor return pipe 15. To be done.

When the gas introduced into the gas-liquid separation device 20 does not contain a liquid (normal time), as shown in FIG. 3, the gas flowing in from the inflow port 21a is supplied to the inflow side chamber 21d and the first side. The gas is discharged from the gas outlet 21b through the opening 22a, the gap C formed between the shield plate 22 and the float valve 23, and the outflow side chamber 21e.

When the suspended refueling device 1 is used in a low temperature such as winter, part of the vapor contained in the gas introduced into the gas-liquid separation device 20 is condensed and the gas is discharged from the inflow port 21a of the gas-liquid separation device 20. A nebulized mixture of gasoline flows in. The atomized mixture that has flowed into the inflow side chamber 21d from the inflow port 21a is separated into gas and gasoline by colliding with the shielding plate 22, and the separated gasoline drops downward and collects in the liquid pool portion 21g, and the hole 21h. When the gasoline is accumulated up to the height, the float valve 23 is floated up, discharged from the liquid outlet 21c, and returned to the oil storage tank T.

On the other hand, the gas separated by the shield plate 22 passes through the gas outlet through the first opening 22a, the gap C formed between the shield plate 22 and the float valve 23, and the outflow side chamber 21e, as in the normal case. It is discharged from 21b. However, when the concentration of gasoline in the inflowing mist mixture is high, the gasoline is not discharged from the liquid outlet 21c in time, and the gasoline separated by the shielding plate 22 blocks the gap C and the first opening 22a. Sometimes. If the second opening 22b is simply bored in the upper part of the shield plate 22 to prevent this, the atomized mixture that has flowed in may be discharged from the gas discharge port 21b as it is without colliding with the shield plate 22. ..

Since the valve 26 and the biasing means 27 are provided in the second opening 22b, the gasoline is not discharged from the liquid outlet 21c in time, and the gasoline separated by the shielding plate 22 blocks the gap C and the first opening 22a. Only in the case where the gas flows, the pressure in the inflow side chamber 21d rises to a predetermined value to open the second opening 22b, and the gas separated by the shield plate 22 is discharged from the gas outlet 21b via the outflow side chamber 21e. You can

Further, when the fuel oil enters the vapor passage of the fuel supply hose 8 from the fuel oil passage, the liquid mixture flows in from the inflow port 21a of the gas-liquid separation device 20. If this situation continues, both the discharge of gas from the gas outlet 21b and the discharge of gasoline from the liquid outlet 21c will not be in time, and the gas-liquid separation device 20 may be damaged. Therefore, the pressure in the inflow side chamber 21d is monitored by the pressure sensor 24, and when the pressure reaches a predetermined value, it is considered that the liquid mixture is flowing in from the inflow port 21a, and based on the detection signal of the pressure sensor 24. The compression pump 30 and the suspension type oil supply device 1 are controlled to stop.

The gas discharged from the gas outlet 21b of the gas-liquid separation device 20 is introduced into the condenser 31 of the vapor liquefaction recovery device 9 via the compression pump 30 as shown in FIG. It is sent to the gas-liquid separation measuring tank 32 while being cooled by the flowing gasoline. Here, the vapor is compressed and cooled, and a part of the vapor is changed to gasoline, and a part of the air carried together with the vapor is changed to water.

Gasoline and water supplied to the gas-liquid separation measuring tank 32 settle to the bottom, are separately discharged from the gas-liquid separation measuring tank 32 due to the difference in specific gravity, and the gasoline is returned to the oil storage tank T. On the other hand, the vapor and air accumulated in the upper part of the gas-liquid separation measuring tank 32 are conveyed to the switching valve 37. Here, by setting the flow path of vapor or the like by the switching valve 37 as shown by the solid line in FIG. 2, the vapor and air are introduced into the adsorption tower 34A and the vapor is adsorbed. The air introduced into the adsorption tower 34A together with the vapor is discharged to the outside through the relief valve 39. At the same time, the vapor adsorbed in the adsorption tower 34B is desorbed. The desorbed vapor is supplied to the vacuum side 30b of the compression pump 30 via the switching valve 37 and returned to the vapor return pipe 15 again.

When the amount of gasoline refueling reaches a predetermined value (for example, 50 L), the switching valve 37 switches the flow path such as vapor to the state shown by the broken line in FIG. As a result, the vapor and the air are introduced into the adsorption tower 34B and the vapor is adsorbed. The air introduced into the adsorption tower 34B together with the vapor is discharged to the outside through the relief valve 39. At the same time, the vapor adsorbed in the adsorption tower 34A is desorbed. The desorbed vapor is supplied to the vacuum side 30b of the compression pump 30 via the switching valve 37 and returned to the vapor return pipe 15 again.

By switching the flow path of vapor or the like by the switching valve 37, the above operation is repeated and vapor adsorption is alternately performed in the two adsorption towers 34A and 34B. As a result, the adsorption towers 34A and 34B can be prevented from becoming saturated, and the vapor generated during refueling can be reliably recovered.

As described above, according to the present embodiment, it is possible to recover the vapor while preventing the compression pump 30 from being damaged, and it is possible to cope with the damage to the fuel supply hose.

Next, a specific configuration of the hose processing device 6 will be described with reference to FIGS. 1, 4 and 5.

The hose processing device 6 includes a drum 41 around which the fuel supply hose 8 is wound, a fuel oil pipe 43 to which the fuel supply hose 8 is connected via an adapter 42, and the like.

The hose processing device 6 not only holds the drum 41 rotatably and holds the refueling nozzle 7 in a vertically movable manner, but also as shown in FIG. And the vapor passage 8b are connected to the oil supply pipe 2 and the vapor return pipe 15, respectively, and the signal line 44 (see FIG. 4) connected to a device (for example, an indicator) attached to the oil supply nozzle 7 is connected to the oil supply hose 8 It is taken out from the inside and connected to the power supply 45.

The signal line 44 can be housed in the innermost portion of the fuel supply hose 8, the vapor passage 8b is formed on the outer side thereof, the fuel oil passage 8a is formed on the outermost portion thereof, and the signal line 44 is housed in the vapor passage 8b. You can also As a result, the refueling hose 8 looks good and the winding of the refueling hose 8 by the drum 41 becomes easy. In addition, if the signal line 44 is configured to be wound around the refueling hose 8 in a spiral shape, the signal line 44 can be easily replaced when the signal line 44 is broken, and the existing refueling hose 8 can be used to reduce the equipment cost. Can be reduced.

On the other hand, the drum 41 rotates to raise and lower the refueling nozzle 7, but this rotation should not hinder the connection between the fuel oil passage 8a and the refueling pipe 2 or the like. Therefore, a stator 47 is rotatably attached to the drum 41 via a bearing 46, and a rotor 48 is connected to the opposite side of the stator 47 to connect the fuel oil passage 8a, the vapor passage 8b, and the signal line. 44, the stator 47, the drum 41, and the rotor 48 are configured to have a relationship described later.

The fuel oil passage 8 a communicates with the fuel oil passage 41 a of the drum 41 via the fuel oil passage 42 a of the adapter 42 and the fuel oil pipe 43. The fuel oil passage 41a of the drum 41 communicates with the inside of the rotor 48, and the rotor 48 and the oil supply pipe 2 are connected via a bearing or the like so that the oil supply pipe 2 does not rotate.

The vapor passage 8b is connected to the vapor pipe 49 through the vapor passage 42b of the adapter 42, and the vapor pipe 49 is connected to the vapor passage 41b of the drum 41. The vapor passage 41b communicates with the vapor passage 47a of the stator 47 via a passage 47b, and the vapor passage 47a is connected to the vapor return pipe 15 via a vapor pipe 50. Here, the vapor pipes 49, 50 and the like rotate together with the drum 41, but since the adapter 42 to which one end of the refueling hose 8 is connected also rotates, the vapor pipes 49, 50 and the like may break. There is no.

The signal line 44 is taken out from the inside of the oil supply hose 8 through the cable passage 42c of the adapter 42, taken out of the drum 41 through the cable passage 41c of the drum 41, and connected to the power supply 45. Here, the signal line 44 existing in the cable passage 41c of the drum 41 rotates together with the drum 41, but since the adapter 42 also rotates in the same manner, the signal line 44 is not broken.

In the above description, the case of liquefying and recovering gasoline vapor has been described, but the present invention is not limited to this, and the present invention can be applied to a device that supplies various highly volatile fuel oils.

1 Suspended Refueling Device 2 Refueling Pipe 3 Venting Pipe 4 Refueling Device Main Body 5 Canopy 6 Hose Processing Device 7 Refueling Nozzle 8 Refueling Hose 8a Fuel Oil Path 8b Vapor Path 9 Vapor Liquefaction Recovery Device 11 Oil Pump 12 Solenoid Valve 13 Flowmeter 15 Vapor Return pipe 20 Gas-liquid separator 21 Housing 21a Inlet 21b Gas outlet 21c Liquid outlet 21d Inflow side chamber 21e Outflow side chamber 21f Rise 21g Liquid pool 21h Hole 22 Shield 22a First opening 22b Second opening 23 Float Valve 24 Pressure sensor 25 Stopper 26 Valve 27 Energizing means 30 Compression pump 30a Compression side 30b Vacuum side 31 Condenser 32 Gas-liquid separation measuring tank 34 (34A, 34B) Adsorption tower 35 Cooling section 36 Gasoline return valve 37 Switching valve 38 Reverse Stop valve 39 Relief valve 41 Drum 41a Fuel oil passage 41b Vapor passage 41c Cable passage 42 Adapter 42a Fuel oil passage 42b Vapor passage 42c Cable passage 43 Fuel oil pipe 44 Signal line 45 Power supply 46 Bearing 47 Stator 47a Vapor passage 47b Passage 48 Rotation Child 49, 50 Vapor piping

Claims (4)

An oil supply pipe having one end connected to an oil storage tank and the other end connected to an oil supply hose having an oil supply nozzle; and an oil supply pump and a flow meter interposed in the oil supply pipe,
A refueling hose processing device that winds the refueling hose around a take-up reel and holds the refueling nozzle in a vertically movable manner,
A vapor liquefaction recovery device having a suction means, one end of which is interposed in a vapor return pipe opening in the vicinity of the refueling nozzle,
On the upstream side of the suction means of the vapor return pipe, a liquid inflow prevention means for preventing the liquid from flowing into the suction means is provided ,
The take-up reel of the refueling hose processing device is formed separately from a fuel oil passage and a vapor passage that communicate with the fuel oil passage and the vapor passage of the refueling hose separately, and the fuel oil passage and the vapor passage are separately formed. the oil supply nozzle is connected to the equipment to be attached to, suspension-type oil and wherein the Rukoto a cable passage for accommodating a part of the signal line to which the other end is connected to the power supply. The liquid inflow prevention means forms a housing having an inflow port and a gas outflow port in an upper part and a liquid outflow port in a lower part, an inflow side chamber and an outflow side chamber in the housing, and a ventilation hole is formed in the shielding. Rutotomoni and a plate,
The liquid inflow prevention means includes a plurality of the vent holes, and a vent hole located at an upper part of the vent holes is provided with a valve that opens when the pressure in the inflow side chamber reaches a predetermined value. The suspension type oil supply device according to claim 1, wherein The liquid inflow prevention means includes a pressure sensor for detecting the pressure in the inflow side chamber,
The suspension type oil supply apparatus according to claim 2 , wherein the pressure sensor stops the suction means when detecting that the pressure in the inflow side chamber has reached a predetermined value. The power supply side end portion of the inlet and the cable passage before Symbol fuel oil passage is formed on the rotation axis of said take-up reel,
Vapor passage formed in the take-up reel, according to claim 1, 2 or 3, characterized in that it is connected to the vapor return pipe via a stator mounted for relative rotation take-preparative reel Suspension refueling device.