JP2019167130A - Suspended type fueling device - Google Patents

Abstract

To provide a suspended type fueling device capable of recovering vapor while preventing damage to a compression pump or the like.SOLUTION: A suspended type fueling device 1 comprises: a fueling pipe 2 whose one end is connected to a fuel storage tank T and whose the other end is connected to a fueling hose 8 having a fueling nozzle 7; a fueling system having a fueling pump 11 interposed in the fueling pipe 2, and a flow meter 13; a fueling hose handling device 6 which winds the fueling hose 8 around a winding reel to support the fueling nozzle 7 in a freely ascending/descending manner; a vapor liquefaction recovery device 9 having a compression pump 30 interposed in a vapor return pipe 15 whose one end opens near the fueling nozzle 7; and liquid inflow prevention means 20 for preventing an inflow of liquid to the compression pump, provided on an upstream side of the compression pump of the vapor return pipe 15.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a suspension type fueling device, and more particularly to a suspension type fueling device that is installed in a fueling station that supplies fuel oil to an automobile or the like and has a function of collecting fuel oil vapor flowing out from a fuel tank of the automobile or the like during fueling. About.

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

  In the fueling device including the suspension type fueling device, fuel oil vapor corresponding to the amount of fuel flows out from the fuel tank in order to supply highly volatile fuel oil such as gasoline to a fuel tank of an automobile or the like. When this fuel oil vapor was released into the atmosphere, not only was the resource wasted, but there was also a risk of fire and environmental pollution due to ignition.

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

  On the other hand, the applicant in Patent Document 2 sucks fuel oil vapor flowing out from a fuel tank of an automobile or the like during refueling with a compression pump, cools the sucked fuel oil vapor with a condenser, and supplies liquefied fuel oil. Vapor liquefaction recovery that reduces the environmental burden by recovering and adsorbing the fuel oil vapor that has not been liquefied on the surface of the adsorbent, desorbing the adsorbed fuel oil vapor, and sending it again to the condenser for reuse A refueling system with system was proposed.

JP 61-47399 A JP 2017-0797903 A

  In the case where the vapor liquefaction recovery system described in Patent Document 2 is provided in the suspension type oil supply device described in Patent Document 1 and the vapor is liquefied and recovered, 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 fueling device, the vapor is liquefied in the vapor recovery pipe in winter when the temperature is low, and the compression pump may suck the liquid and break.

  Therefore, the present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide a suspended oil supply device capable of recovering vapor while preventing damage to a compression pump or the like.

  In order to achieve the above object, a suspended oil supply apparatus according to the present invention includes 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. An oil supply system having a pump and a flow meter; an oil supply hose processing device for winding the oil supply hose around a take-up reel to hold the oil supply nozzle so as to be movable up and down; and a vapor return whose one end opens in the vicinity of the oil supply nozzle A vapor liquefaction recovery apparatus having a suction means interposed in a pipe, and a liquid inflow prevention means for preventing the liquid from flowing into the suction means upstream of the suction means of the vapor return pipe. Features.

  According to the suspension type oil supply device of the present invention, the liquid return prevention means for preventing the liquid from flowing into the suction means is provided upstream of the suction means of the vapor return pipe, so that the suspension type oil supply device is operated in a low temperature environment. In this case, even if the vapor is liquefied in the vapor recovery pipe, the liquefied vapor is not sucked into the suction means, so that the compression pump or the like as the suction means can be prevented from being damaged.

  In the above-described suspended oil supply device, the liquid inflow prevention means includes a housing having an inlet and a gas outlet at an upper portion and a liquid outlet at a lower portion, and an inflow side chamber and an outflow side chamber formed in the housing. It can comprise with the shielding board in which an air hole is drilled. As a result, the fuel oil liquefied by the vapor can be separated from the vapor with a simple configuration.

  In the above suspension type oil supply device, the liquid inflow preventing means is provided with a plurality of the vent holes, and the vent hole located in the upper part of the vent holes is opened when the pressure in the inflow side chamber reaches a predetermined value. A valve can be provided. If a vent hole is drilled in the upper part of the shielding plate, there is a possibility that the mixture of fuel oil and vapor flowing in from the inflow port will flow through the inflow side chamber and the outflow side chamber and out of the gas outflow port without colliding with the shielding plate, Conversely, if a vent hole is not drilled in the upper part of the shield plate, the fuel oil separated by collision with the shield plate will block the vent hole and vapor will flow out if the fuel oil concentration of the mixture flowing in from the inlet is high. There is a risk of not flowing into the 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 side chamber rises and the valve is opened by the blockage of the vent hole by the fuel oil, and is positioned above the shielding plate. The vapor can flow into the outflow side chamber and out of the gas outlet through the vent hole.

  In the suspension type fueling device, the liquid inflow prevention means is provided with a pressure sensor for detecting the pressure in the inflow side chamber, and when the pressure sensor detects that the pressure in the inflow side chamber has reached a predetermined value, The suction means can be stopped. As a result, even when there is an abnormality such as when fuel oil enters the vapor path from the fuel oil path of the oil supply hose, it is not necessary to suck the fuel oil into the suction means, so that damage to the compression pump, etc. can be prevented more reliably. Can do.

  In the above-described suspended oil supply device, a fuel oil passage and a vapor passage that separately communicates the take-up reel of the oil supply hose processing device with the fuel oil passage and the vapor passage of the oil supply hose, the fuel oil passage and the vapor passage, Formed separately, one end is connected to a device attached to the fuel supply nozzle, and the other end is configured with a cable passage accommodating a part of a signal line connected to a power source, and an inlet of the fuel oil passage and The end of the cable passage on the power supply side is formed on the rotation axis of the take-up reel, and the vapor passage formed in the take-up reel is connected via a stator attached to the take-up reel so as to be relatively rotatable. It can be configured to be connected to the vapor return pipe. As a result, even when the take-up reel rotates, it is possible to maintain the state in which the fuel oil passage and vapor passage of the oil supply hose and the fuel oil passage and vapor passage communicate with each other, and to prevent the signal line from being broken. Can do.

  As described above, according to the present invention, it is possible to provide a suspended oil supply apparatus capable of collecting vapor while preventing damage to a compression pump or the like.

It is the schematic which shows one Embodiment of the suspension type oil supply apparatus which concerns on this 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 separator as a liquid inflow prevention means shown in FIG.1 and FIG.2 is shown, (a) is front sectional drawing, (b) is the sectional view on the AA line of (a). It is a figure for demonstrating the specific structure of the hose processing apparatus of the suspension type oil supply apparatus shown in FIG. 1, Comprising: It is a perspective view which shows the hose reel etc. as a take-up reel in a hose processing apparatus. It is a figure which shows a part of hose reel shown in FIG. 4, Comprising: (a) is a partially broken front view, (b) is BB sectional drawing of (a), (c) is C of (a). FIG.

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

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

  The oil supply device body 4 accommodates a part of the oil supply pipe 2 extending from the oil storage tank T to the canopy 5, and the oil supply pipe 2 to be accommodated includes an oil supply pump 11, an electromagnetic valve 12, and A flow meter 13 is arranged.

  Returning to FIG. 1, the hose processing device 6 is provided to hold the oil supply nozzle 7 so as to be movable up and down by winding the oil supply hose 8 around a hose reel (winding reel), as will be described in detail later.

  The fuel supply nozzle 7 is provided with a vapor recovery function, and the fuel supply hose 8 is formed with a vapor path. This vapor path is connected to a vapor return pipe 15 extending from the canopy 5 toward the vapor recovery device 9. Here, by forming the vapor path inside the fuel supply hose 8 and the fuel oil path outside, it is possible to prevent the vapor in the vapor path from being liquefied 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 separation device (liquid inflow prevention means) 20 that separates the liquid from the vapor flowing into the vapor recovery device 9. As shown in FIG. 3, the gas-liquid separator 20 includes a housing 21 having an inlet 21 a and a gas outlet 21 b in the upper portion and a liquid outlet 21 c in the lower portion, and an inflow side chamber 21 d and an outflow side chamber in the housing 21. A shielding 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 are provided.

  In the lower part of the housing 21, a rising part 21f and a liquid reservoir part 21g are formed. A stopper 25 that supports the float valve 23 from below is disposed inside the rising portion 21f, and communicates with the liquid outlet 21c when the float valve 23 is lifted above the stopper 25 of the rising portion 21f. A hole 21h is formed.

  The shield plate 22 is provided with first and second openings (vent holes) 22a and 22b for allowing vapor to pass therethrough. The second opening 22b has a pressure greater than a predetermined value from the inflow side chamber 21d side. A valve 26 that is urged by the urging means 27 from the outflow side chamber 21e side to the inflow side chamber 21d is provided so as to be opened when the air pressure is applied. Note that a gap C is formed between the shielding plate 22 and the rising portion 21f.

  As shown in FIGS. 1 and 2, the vapor liquefaction recovery device 9 is interposed 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”). ) And a gas-liquid separation measuring tank that separates a mixture of vapor, air, gasoline, and water discharged from the condenser 31 into gas, gasoline, and water, respectively. 32 and two adsorptions for adsorbing vapor from the gas discharged from the gas / liquid separation measuring tank 32 and then desorbing it back to the condenser 31. Towers 34A, 34B. A space (hereinafter referred to as a “cooling unit”) 35 accommodating the condenser 31 and the two adsorption towers 34A and 34B is filled with gasoline as a coolant.

  The gas-liquid separation measuring tank 32 is supplied with gas to either the gasoline return valve 36 for returning the gasoline to the refueling pump 11 side or the adsorption towers 34A, 34B, and from either one of the adsorption towers 34A, 34B. A switching valve 37 is provided for switching the flow path so that vapor is supplied.

  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 and 34B, a check valve 38 for introducing outside air into the adsorption towers 34A and 34B and conveying the vapor, and a relief for reducing the pressure in the adsorption towers 34A and 34B to a predetermined value or less. Each of the valves 39 is attached.

  If a heat insulating material is wound around the vapor return pipe 15, it is possible to prevent the vapor in the vapor return pipe 15 from being liquefied due to a decrease in the outside air temperature.

  Next, the vapor collection operation of the suspended oil supply apparatus 1 having the above-described configuration will be briefly described with reference to FIGS.

  When the oil supply pump 11 is turned on and the oil supply is started, the gasoline G1 is supplied from the oil storage tank T to the cooling unit 35, and the condenser 31 and the two adsorption towers 34A and 34B in the cooling unit 35 are cooled. The cooled gasoline G2 is mixed with gasoline recovered from a gas-liquid separation measuring tank 32, which will be described later, via a gasoline return valve 36, and returned to the fuel supply pump 11 as gasoline G3. Thereafter, the gasoline G4 is actually supplied to the vehicle through the oil supply 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 separator 20 via the vapor return pipe 15. Is done.

  When no liquid is contained in the gas introduced into the gas-liquid separator 20 (normal time), as shown in FIG. 3, the gas flowing in from the inflow port 21a is converted into the inflow side chamber 21d, the first The gas is discharged from the gas outlet 21b through the opening 22a, the gap C formed between the shielding plate 22 and the float valve 23, and the outflow side chamber 21e.

  When the suspended oil supply device 1 is used at a low temperature such as in winter, a part of the vapor contained in the gas introduced into the gas-liquid separator 20 is condensed, and the gas is introduced from the inlet 21a of the gas-liquid separator 20. A gasoline mist mixture flows in. The mist mixture flowing 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 falls downward and collects in the liquid reservoir portion 21g, and enters the hole 21h. When the gasoline is accumulated up to the height, the float valve 23 is lifted, discharged from the liquid outlet 21c, and returned to the oil storage tank T.

  On the other hand, the gas separated by the shielding plate 22 is discharged from the gas outlet through the first opening 22a, the gap C formed between the shielding plate 22 and the float valve 23, and the outflow side chamber 21e in the same manner as usual. It is discharged from 21b. However, when the gasoline concentration of the inflowing mist mixture is high, the discharge of gasoline from the liquid outlet 21c is not 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 drilled in the upper part of the shielding plate 22 in order to prevent this, the inflowing mist mixture may not be collided with the shielding plate 22 and may be directly discharged from the gas discharge port 21b. .

  Since the valve 26 and the urging means 27 are provided in the second opening 22b, the gasoline discharged from the liquid outlet 21c is not in time, and the gasoline separated by the shielding plate 22 blocks the gap C and the first opening 22a. Only in the case of the trapping, the pressure in the inflow side chamber 21d increases to a predetermined value, the second opening 22b opens, and the gas separated by the shielding plate 22 is discharged from the gas outlet 21b through the outflow side chamber 21e. Can do.

  Furthermore, when fuel oil enters the vapor path of the fuel supply hose 8 from the fuel oil path, the liquid mixture flows from the inlet 21a of the gas-liquid separator 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 may not be in time, and the gas-liquid separator 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 compressor pump 30 and the suspension type oiling device 1 are controlled to be stopped.

  As shown in FIG. 2, 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, and the cooling unit 35 is passed through as described above. While being cooled by the flowing gasoline, it is sent to the gas-liquid separation measuring tank 32. Here, the vapor is compressed and cooled, and a part of the vapor changes to gasoline, and a part of the air conveyed together with the vapor changes to water.

  The 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 specific gravity difference, and the gasoline is returned to the oil storage tank T. On the other hand, vapor and air staying 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 to the state indicated by the solid line in FIG. 2 by the switching valve 37, the vapor and air are introduced into the adsorption tower 34A and the vapor is adsorbed. The air introduced into the adsorption tower 34 </ b> A together with the vapor is discharged to the outside through the relief valve 39. At the same time, the vapor adsorbed on the adsorption tower 34B is desorbed. The desorbed vapor is supplied to the vacuum side 30b of the compression pump 30 through the switching valve 37 and returned to the vapor return pipe 15 again.

  When the amount of gasoline supplied reaches a predetermined value (for example, 50 L), the switching valve 37 switches the flow path of vapor or the like to the state indicated by the broken line in FIG. As a result, the vapor and 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 on the adsorption tower 34A is desorbed. The desorbed vapor is supplied to the vacuum side 30b of the compression pump 30 through 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 by the two adsorption towers 34A and 34B. As a result, the adsorption towers 34A and 34B can be prevented from being saturated, and the vapor generated during refueling can be reliably recovered.

  As described above, according to the present embodiment, it is possible to collect the vapor while preventing the compression pump 30 from being damaged, and it is possible to cope with the failure of the oil 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 oil supply hose 8 is wound, a fuel oil pipe 43 to which the oil 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 fuel supply nozzle 7 so as to be movable up and down, but also a fuel oil passage 8a formed in the fuel supply hose 8 as shown in FIG. And the vapor path 8b are connected to the oil supply pipe 2 and the vapor return pipe 15, respectively, and a signal line 44 (see FIG. 4) connected to a device (for example, a display) attached to the oil supply nozzle 7 is connected to the oil supply hose 8. Is connected to a power source 45.

  The signal line 44 can be accommodated inside the fuel supply hose 8, the vapor path 8b is formed on the outside, the fuel oil path 8a is formed on the outside, and the signal line 44 is accommodated in the vapor path 8b. You can also. Thereby, the appearance of the oil supply hose 8 is good, and the oil supply hose 8 can be easily wound by the drum 41. If the signal line 44 is configured to be wound around the outer side of the oil supply hose 8 in a spiral shape, the signal line 44 can be easily replaced when the signal line 44 is disconnected, and the existing oil supply hose 8 can be used. Can be reduced.

  On the other hand, the drum 41 rotates to raise and lower the fuel supply nozzle 7, but this rotation should not hinder the connection between the fuel oil passage 8a and the fuel supply pipe 2. Therefore, a stator 47 is attached to the drum 41 via a bearing 46 so as to be relatively rotatable, and a rotor 48 is connected to the opposite side of the stator 47, and a fuel oil passage 8a, a vapor passage 8b, and a 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 through 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 path 8 b is connected to the vapor pipe 49 through the vapor path 42 b of the adapter 42, and the vapor pipe 49 is connected to the vapor path 41 b of the drum 41. The vapor passage 41b communicates with the vapor passage 47a of the stator 47 through the passage 47b. The vapor passage 47a is connected to the vapor return pipe 15 through the vapor pipe 50. Here, the vapor pipes 49, 50 and the like rotate together with the drum 41. However, since the adapter 42 to which one end of the oil supply hose 8 is connected also rotates, the vapor pipes 49, 50 and the like are broken. There is no.

  The signal line 44 is taken out from the oil supply hose 8 through the cable passage 42 c of the adapter 42, taken out from the drum 41 through the cable passage 41 c 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. However, since the adapter 42 also rotates in the same manner, the signal line 44 does not break.

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

DESCRIPTION OF SYMBOLS 1 Suspension type oil supply device 2 Oil supply tube 3 Ventilation tube 4 Oil supply device body 5 Canopy 6 Hose processing device 7 Oil supply nozzle 8 Oil supply hose 8a Fuel oil passage 8b Vapor passage 9 Vapor liquefaction recovery device 11 Oil supply pump 12 Electromagnetic valve 13 Flow meter 15 Vapor Return pipe 20 Gas-liquid separator 21 Housing 21a Inlet 21b Gas outlet 21c Liquid outlet 21d Inlet side chamber 21e Outlet side chamber 21f Rising part 21g Liquid reservoir part 21h Hole 22 Shielding plate 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 unit 36 Gasoline return valve 37 Switching valve 38 Reverse Stop valve 39 Relief valve 41 Drum 41a Fuel oil passage 41b Vapor passage 4 1c Cable passage 42 Adapter 42a Fuel oil passage 42b Vapor passage 42c Cable passage 43 Fuel oil piping 44 Signal line 45 Power supply 46 Bearing 47 Stator 47a Vapor passage 47b Passage 48 Rotor 49, 50 Vapor piping

Claims (5)

An oil supply system 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;
An oil supply hose processing device for winding the oil supply hose around a take-up reel and holding the oil supply nozzle so as to be movable up and down;
A vapor liquefaction recovery apparatus having suction means interposed at a vapor return pipe having one end opened in the vicinity of the fueling nozzle;
A suspension type oil supply device comprising: a liquid inflow prevention means for preventing liquid from flowing into the suction means upstream of the suction means in the vapor return pipe.   The liquid inflow prevention means includes a housing having an inlet and a gas outlet at an upper portion and a liquid outlet at a lower portion, an inflow side chamber and an outflow side chamber formed in the housing, and a shield in which a vent hole is formed. The suspended oil supply apparatus according to claim 1, further comprising a plate. The liquid inflow prevention means includes a plurality of the vent holes,
The suspension type according to claim 2, wherein a valve that opens when the pressure in the inflow side chamber reaches a predetermined value is provided in a vent hole located in an upper portion of the vent holes. Refueling device. The liquid inflow prevention means includes a pressure sensor for detecting the pressure in the inflow side chamber,
The suspension type oiling device according to claim 2 or 3, wherein the pressure sensor stops the suction means when detecting that the pressure in the inflow side chamber has reached a predetermined value. The take-up reel of the refueling hose processing device is formed separately from a fuel oil passage and a vapor passage, which are separately communicated with a fuel oil passage and a vapor passage of the refueling hose, and one end of the fuel oil passage and the vapor passage. A cable passage accommodating a part of a signal line connected to a device attached to the oil supply nozzle and having the other end connected to a power source;
The inlet of the fuel oil passage and the power supply side end of the cable passage are formed on the rotating shaft of the take-up reel,
5. The vapor passage formed in the take-up reel is connected to the vapor return pipe via a stator attached to the take-up reel so as to be relatively rotatable. The suspended oil supply device as described.