JP5598682B2 - Lubrication device - Google Patents

Description

  The present invention relates to a fueling device, and more particularly to a fueling device that is installed in a fueling station that supplies fuel oil to an automobile or the like and includes a vapor recovery system that recovers gasoline vapor that flows out of a fuel tank of the automobile during fueling.

  2. Description of the Related Art Conventionally, in a fuel supply apparatus that supplies highly volatile fuel oil such as gasoline to a fuel tank of an automobile or the like, gasoline vapor corresponding to the amount of fuel flows out from the fuel tank. When this gasoline vapor is released into the atmosphere, not only resources are wasted, but there is also a risk of fire and environmental pollution due to ignition.

  In view of this, the present applicant has disclosed in Patent Document 1 that a vapor recovery cover is provided in a discharge pipe of a fuel supply nozzle that receives supply of fuel oil from a fuel supply pump, and occurs during refueling via a vapor recovery path that communicates with the vapor recovery cover. In the vapor recovery device of the fueling device provided with the vapor recovery means for sucking and recovering the vapor to be performed, a notification mechanism for notifying the circulation of the vapor therein is provided in the middle of the vapor recovery path, and the vapor is reliably recovered We proposed a vapor recovery device for a fueling device with improved reliability.

  Although the invention described in Patent Document 1 functions effectively, the recovered gasoline vapor amount is 1.1 to 1.5 times the oil supply volume, and this large amount of gasoline vapor causes the gasoline in the oil storage tank to evaporate. This has the negative effect of being promoted and releasing gasoline vapor from the fuel tank to the atmosphere, which may reduce the vapor recovery rate.

  Therefore, in order to prevent the gasoline in the oil storage tank from evaporating due to the recovered gasoline vapor, a method of recovering the gasoline vapor after it is cooled and liquefied is employed.

JP 2001-114400 A

  However, the liquefaction recovery of the gasoline vapor is generally performed by compression and cooling, and the conventional gasoline vapor liquid recovery device is also cooled by a refrigerator. Since this refrigerator is a large-scale device, the gasoline meter and the gasoline vapor liquefaction recovery device must be configured independently of each other on the same island (island where the meter is installed). Depending on the size, the gasoline vapor liquefaction recovery device may not be installed.

  In addition, in order to connect the gasoline meter and the gasoline vapor recovery device, connection work using underground underground piping is necessary, and the work load is large and the cost is high.

  Therefore, the present invention has been made in view of the above-described problems in the conventional fueling device, and provides a fueling device that can recover gasoline vapor at a low cost and without being limited by the size of the island. For the purpose.

In order to achieve the above object, the present invention is a fueling device comprising a fueling system and a gasoline vapor liquefaction recovery system, the fueling system having one end connected to an oil storage tank and the other end having a fueling nozzle. An oil supply pipe connected to the oil supply hose, an oil supply pump and a flow meter interposed in the oil supply pipe, and the gasoline vapor liquefaction recovery system includes a vapor return pipe whose one end opens near the oil supply nozzle, and the vapor A compression pump and a cooling adsorption device interposed in a return pipe; and a gas-liquid separation tank for gas-liquid separation of gasoline vapor from the cooling adsorption device , wherein the cooling adsorption device has a triple pipe structure and has an outermost portion the fluid path is assigned, the intermediate portion and the innermost portion, switchable gasoline vapor adsorption path and desorption path and wherein Rukoto assigned respectively.

  And according to the present invention, since the fueling system and the gasoline vapor liquefaction recovery system are integrated, underground piping work at the gas station becomes unnecessary, and the size of the island is not limited. The degree of freedom of the layout of the fueling device on the island can also be improved. Furthermore, the recovery efficiency can be improved by liquefying and recovering the gasoline vapor, and the recovered vapor can be reused.

Furthermore, according to the present invention, it is possible to cool the thus vapor gasoline solution, the refrigerator can be eliminated. Further, the flow path of the gas-liquid With outermost portion prevents the performance difference in the adsorption passage of the suction passage and the innermost portion of the outermost portion touching the outside air occurs, improving the cooling effect of the gasoline solution Can be made.

  In the fueling device, the cooling adsorption device can switch between adsorption and desorption of gasoline vapor by an electromagnetic valve unit, and the cooling adsorption device can be miniaturized by integrating the adsorption unit and the desorption unit.

  As described above, according to the present invention, it is possible to provide an oil supply apparatus that is low-cost and small in size and that can recover gasoline vapor without being limited by the size of the island.

It is the schematic which shows one Embodiment of the oil supply apparatus which concerns on this invention, Comprising: (a) is a front view, (b) shows a side view. It is a perspective view which shows the state which removed the cover etc. of the oil supply apparatus shown in FIG. It is a flowchart which shows operation | movement of the fuel supply apparatus which concerns on this invention, Comprising: The inner side pipe | tube of a cooling adsorption apparatus shows the state which is performing adsorption | suction operation and the middle pipe | tube is performing desorption operation | movement. It is a partially broken perspective view of the cooling adsorption apparatus shown in FIG. It is a flowchart which shows operation | movement of the fueling apparatus which concerns on this invention, Comprising: Switching control of the adsorption | suction operation | movement of a fueling apparatus and desorption operation is shown especially. It is a flowchart which shows operation | movement of the oil supply apparatus which concerns on this invention, Comprising: The middle pipe | tube of a cooling adsorption apparatus shows the state which is performing adsorption | suction operation, and the inner side pipe | tube is performing desorption operation | movement. It is a flowchart which shows the gasoline collection control and drainage control of the gas-liquid separation tank shown in FIG.2, FIG3 and FIG.6.

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

  1 and 2 show an embodiment of a fueling device according to the present invention. The fueling device 1 includes a main body case 3 installed on an island of a fueling station and a cover provided on the main body case 3. A plurality of hose connection parts 5 provided at the upper end of the housing main body 2 and the main body case 3 and connected to the oil supply system by pipes, and connected to each hose connection part 5, and an oil supply nozzle 7 at the tip And a panel 8 having a display unit 9 and an operation unit 10. In addition, since these components are the same as that of the conventional oil supply apparatus, detailed description is abbreviate | omitted.

  The oil supply system in which the plurality of hose connection parts 5 are connected via a pipe has an oil supply pipe (not shown) having one end inserted into an oil storage tank (not shown) and the other end provided with a hose connection part 5 and the oil supply. An oil supply pump 31 (see FIG. 3) and a flow meter 32 interposed in the pipe are provided.

    2 shows a state in which the main body case 3, the cover 4, the oil hose 6 and the oil nozzle 7 of the oil supply device 1 shown in FIG. 1 are removed. The oil supply device 1 further includes a compression pump 21 and a cooling adsorption device 23. And a gasoline vapor liquefaction recovery system 20 including a gas-liquid separation tank 24, an electromagnetic valve unit 25, and the like.

  Next, each device constituting the gasoline vapor liquefaction recovery system 20 will be described with reference to FIGS. 2 and 3.

  One end of the compression pump 21 is interposed in a vapor return pipe 26 that opens in the vicinity of the oil supply nozzle 7, an adsorption side 21 a that compresses the vapor of fuel oil during refueling, and a desorbed gasoline vapor (hereinafter simply referred to as “vapor”). ) To the vapor return pipe 26, and a desorption side 21b. A pressure sensor 22 that detects the pressure of the compressed vapor is provided on the downstream side of the suction side 21a.

  The cooling adsorption device 23 is connected to the vapor return pipe 26 and is provided for cooling and adsorbing the vapor from the compression pump 21. As shown in FIG. 4, the cooling and adsorbing device 23 employs a triple tube structure including three tubes of an outer tube 23a, an intermediate tube 23b, and an inner tube 23c. A plurality of vapor passages 23d are formed in the outer pipe 23a, and the gasoline in the vapor passages 23d is cooled by the gasoline flowing therearound. Further, the intermediate tube 23b and the inner tube 23c are configured to adsorb / desorb vapor, and an adsorption tower is provided in these.

  The gas-liquid separation tank 24 is provided to separate the vapor, air, gasoline, and water mixture supplied from the cooling adsorption device 23 into a gas composed of vapor and air, gasoline, and water.

  The electromagnetic valve unit 25 includes four electromagnetic valves 25a to 25d. In order to switch the flow path when the adsorption operation and the desorption operation are switched between the inner tube 23c and the middle tube 23b in the cooling adsorption device 23. Provided.

  Next, operation | movement of the oil supply apparatus 1 which has the said structure is demonstrated in detail, referring FIGS. 3-5. The steps in parentheses correspond to the steps shown in FIG.

  When the oil supply pump 31 is turned on and oil supply is started (step S1), gasoline is supplied from the oil storage tank to the oil supply nozzle 7 via the outermost part between the outer pipe 23a and the intermediate pipe 23b of the cooling adsorption device 23. Supplied. At the same time, the electromagnetic valves 25b, 25c, 40 are opened, the compression pump 21 is turned on (step S2), and the vapor generated by refueling flows to the suction side 21a of the compression pump 21 via the vapor return pipe 26. . The amount of oil supplied by the oil supply pump 31 is measured by the flow meter 32 (step 3).

  The vapor supplied to the suction side 21a of the compression pump 21 is compressed and introduced into a vapor channel 23d (see FIG. 4) in the outer tube 23a of the cooling adsorption device 23. The pressure of the gasoline vapor between the adsorption side 21 a of the compression pump 21 and the cooling adsorption device 23 is measured by the pressure sensor 22.

  The vapor supplied to the vapor flow path 23d of the cooling adsorption device 23 is sent to the gas-liquid separation tank 24 while being cooled by the gasoline flowing in the outermost part between the outer pipe 23a and the middle pipe 23b. Here, the vapor is compressed and cooled, and a part of the vapor changes to gasoline, and a part of the atmosphere conveyed with the vapor changes to water.

  The gasoline and water supplied to the gas-liquid separation tank 24 settle at the bottom of the gas-liquid separation tank 24. On the other hand, the vapor and the air stay in the upper part of the gas-liquid separation tank 24 and are supplied to the electromagnetic valve unit 25. Here, since the solenoid valves 25a and 25d of the solenoid valve unit 25 are in a closed state (indicated by white arrows) and the solenoid valves 25b and 25c are in an open state (indicated by black arrows), vapor and air are Vapor is adsorbed by being introduced into the inner pipe 23c of the cooling adsorption device 23 through the electromagnetic valve 25b. The air introduced into the inner pipe 23c together with the vapor is discharged from the air discharge hole 36 through the relief valve 34 and the air discharge pipe 35 (see FIG. 2).

  By the way, vapor is desorbed inside the intermediate pipe 23b of the cooling adsorption device 23, and the desorbed vapor is supplied to the desorption side 21b of the compression pump 21 via the electromagnetic valve 25c. The vapor supplied to the detachment side 21b is returned to the vapor return pipe 26 again.

  Here, in step S4 of FIG. 5, when the amount of oil supply Q measured by the flow meter 32 is less than q1 (for example, q1 = 50 l) (step S4: No), the flow rate pulse is stored (step S7).

  On the other hand, in step S4, when the fuel amount Q measured by the flow meter 32 becomes q1 (q1 = 50l) (step S4: Yes), the fuel count of the flow meter 32 is reset (step S5). Then, the opening and closing states of the electromagnetic valves 25a to 25d of the electromagnetic valve unit 25 are reversed to switch between the adsorption operation and the desorption operation in the middle tube 23b and the inner tube 23c of the cooling adsorption device. FIG. 6 shows a state in which the operation is switched in this way.

  As shown in FIG. 6, the solenoid valves 25a and 25d of the solenoid valve unit 25 are in an open state (indicated by black arrows) and the solenoid valves 25b and 25c are in a closed state (indicated by white arrows). The vapor and air staying in the liquid separation tank 24 are conveyed to the inside of the middle pipe 23b of the cooling adsorption device 23, where the vapor is adsorbed and the air supplied to the inner pipe 23c together with the vapor is supplied to the relief valve 39, the air The air is discharged from the air discharge hole 36 through the discharge pipe 35 (see FIG. 2).

  On the other hand, inside the inner pipe 23c where the adsorbed vapor exists, the vapor is desorbed and the desorbed vapor is supplied to the adsorption side 21b via the electromagnetic valve 25a of the electromagnetic valve unit 25, and the vapor return pipe. 26 is returned. By repeating the operation described above, the middle tube 23b of the cooling adsorption device 23 and the adsorption tower disposed inside the inner tube 23c are prevented from being saturated, and the vapor generated during refueling is reliably recovered. can do.

  Returning to FIG. 5, after storing the flow rate pulse in step S7, the oil pump 31 is turned off (step S8), the solenoid valves 25b, 25c, and 40 are closed, the compression pump 21 is turned off, and the operation is finished. (Step S9)

  Next, vapor recovery control and drainage control in the gas-liquid separation tank 24 will be described with reference to FIGS.

  Inside the gas-liquid separation tank 24, a gasoline sensor (not shown) is arranged so as to be positioned above the water sensor (not shown). When gasoline and water are supplied from the cooling adsorption device 23, the operation of the flowchart shown in FIG. 7 is periodically executed.

  In step S11, it is determined whether or not the gasoline sensor is turned on. If the gasoline sensor is turned on, that is, if the gasoline is stored in a predetermined amount or more (step S11: Yes), the solenoid valve 41 is turned on. Is opened (step S12).

  In step S13, it is determined whether or not the time T from the opening of the solenoid valve 41 to the present time has passed a predetermined time t1, and if the predetermined time has passed (step S13: Yes), the solenoid valve 41 is closed, the collected amount is stored, and the operation is terminated (step S14). On the other hand, in step S13, when the predetermined time t1 has not elapsed from the time when the electromagnetic valve 41 is opened to the present time T (step S13: No), the process waits until the predetermined time t1 has elapsed.

  In the above step S11, when the gasoline sensor remains off, that is, when only a small amount of gasoline is stored (step S11: No), whether or not the water sensor is turned on in step S15. to decide. When the water sensor is on, that is, when a predetermined amount or more of water is stored (step S15: Yes), the electromagnetic valve 42 is opened and drained into the water reservoir 37 (see FIG. 2) (step S16). .

  In step S17, it is determined whether or not the time T from the opening of the solenoid valve 42 to the present time has passed the predetermined time t2, and if the predetermined time has passed (step S17: Yes), the solenoid valve 42 is closed and the process ends (step S18). On the other hand, if the predetermined time t2 has not elapsed from the time when the electromagnetic valve 42 is opened in step S17 (step S17: No), the process waits until the predetermined time t2 elapses.

  As described above, according to the present invention, since the oil supply device and the gasoline vapor liquefaction recovery device, which have been configured independently of each other, are integrated, underground piping work at the gas filling station is unnecessary and the size of the island is increased. Without limitation, the layout flexibility of the oil supply device on the island can be improved. Moreover, adsorption | suction and desorption | suction can be performed simultaneously with the single compression pump 21, the number of apparatus can be reduced, and an apparatus can be reduced further.

DESCRIPTION OF SYMBOLS 1 Oil supply apparatus 2 Housing 3 Main body case 4 Cover 5 Hose connection part 6 Oil supply hose 7 Oil supply nozzle 8 Panel 9 Display part 10 Operation part 20 Gasoline vapor collection system 21 Compression pump 21a Adsorption side 21b Desorption side 22 Pressure sensor 23 Cooling adsorption apparatus 23a Outer pipe 23b Middle pipe 23c Inner pipe 23d Vapor flow path 24 Gas-liquid separation tank 25 Solenoid valve units 25a to 25d Solenoid valve 26 Vapor return pipe 31 Oil pump 32 Flow meter 33 Check valve 34 Relief valve 35 Air discharge pipe 36 Air discharge Hole 37 Water reservoir 38 Check valve 39 Relief valve 40-42 Solenoid valve

Claims (2)

It has an oiling system and a gasoline vapor liquefaction recovery system,
The oil supply system includes an oil supply pipe connected at one end to an oil storage tank and connected to an oil supply hose having an oil supply nozzle at the other end, an oil supply pump and a flow meter interposed in the oil supply pipe,
The gasoline vapor liquefaction recovery system includes a vapor return pipe whose one end is open near the fuel supply nozzle, a compression pump and a cooling adsorption device interposed in the vapor return pipe, and gas vapor separated from the cooling adsorption device. A gas-liquid separation tank ,
The cooling suction device has a triple pipe structure, liquid channels are allocated to the outermost portion, the intermediate portion and the innermost portion, switchable gasoline vapor adsorption path and desorption path and wherein Rukoto assigned each Refueling device. The oil supply device according to claim 1 , wherein the cooling adsorption device switches between adsorption and desorption of gasoline vapor by an electromagnetic valve unit.

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