JP6764583B2 - Refueling device - Google Patents

Description

The present invention relates to a refueling device, and more particularly to a refueling device that copes with leakage of fuel oil or the like from a refueling mechanism.

Gas stations that refuel fuel tanks of vehicles such as automobiles are equipped with refueling devices that incorporate refueling systems for multiple oil types. Since a refueling mechanism such as a refueling pump and a flow meter is housed in this refueling device to handle highly flammable dangerous substances, it is necessary to give sufficient consideration to safety measures against fire.

Therefore, the applicant has applied a liquid for detecting an abnormality in the weighing machine and the sump in a refueling device including a sump mounted on a pit formed on the island and a weighing machine mounted on the island so as to cover the sump. We have proposed a refueling device that can respond to various abnormalities and ensure the safety of refueling by providing a pool sensor or the like (Patent Document 1).

Further, the applicant applies to a refueling device having a lower case for accommodating a refueling device, an upper case provided with an indicator, and a top case provided on columns erected on both sides of the lower case. We proposed a refueling device that can easily and safely perform maintenance and inspection work on refueling equipment by providing a center panel that can be removed from the front panel, an antistatic pad on the front panel, and an oil pan at the bottom of the lower case (patented). Document 2).

Japanese Unexamined Patent Publication No. 2008-179199 Japanese Unexamined Patent Publication No. 2014-65520

The invention described in Patent Document 1 is also effective, and leakage of liquid can be detected by a liquid pool sensor. However, since there is no means to discharge the leaked liquid from the refueling device to the outside immediately after detection, if the recovery of the leaked liquid is delayed or the liquid pool sensor fails, the leaked liquid overflows and permeates into the ground after detection. , The risk of causing soil pollution could not be denied.

Further, the leaked liquid detection structure described in Patent Document 2 has a problem that it cannot be determined whether the leaked liquid is rainwater or fuel oil.

Therefore, the present invention has been made in view of the above-mentioned problems in the prior art, and in addition to early detection of leakage of fuel oil or the like, countermeasures against sensor failure for detecting leakage are taken, and the type of leaked liquid is also determined. The purpose is to provide a possible refueling device.

In order to achieve the above object, the refueling device of the present invention is bored in a refueling mechanism housed in a main body housing, a liquid pool located below the refueling mechanism, and a leak detection mechanism. The leak detection mechanism is provided with a sensor housing accommodating a float sensor for leak detection, an inflow path at the lower part of the sensor housing, and an outflow path at the upper part of the sensor housing. first conduit is connected which communicates with the hole formed in the liquid reservoir, wherein the outlet channel Rukoto second conduit is connected which communicates with the discharge port drilled in the lower portion of the body housing It is characterized by.

According to the refueling device of the present invention, leaked liquids such as gasoline and water leaked from the refueling mechanism can be collected in the liquid sump and sent to the leak detection mechanism through the holes formed in the liquid sump. Early detection of leaks can be achieved. Further, by providing the inflow path below, the float can be raised by the pushing-up effect, and by providing the outflow path above, a downward gradient can be obtained, and the effect of discharging the leaked liquid can be improved.

In the refueling device, the upper portion of the plate-shaped bracket attached to the leak detection mechanism is formed in a U-shape when viewed from above, and the lower surface of the U-shaped portion abuts on the upper surface of the attachment portion of the liquid pool portion. It can be fixed so that the proper posture of the leak detection mechanism can be maintained and the certainty of leak detection can be improved.

Further, the bottom surface of the sensor housing is open, a lid having a shaft portion having a detection portion inside engages with the opening, and the float having a detection portion inside slides on the shaft portion. , The detection unit and the detection unit can detect the movement of the float in the vertical direction. By removing the lid, the leaked liquid accumulated in the sensor housing can be easily discharged to the outside.

Further, the sensor housing has an opening on the ceiling surface, a second lid body provided with a guide portion engages with the opening on the ceiling surface, and the guide portion is vertically above the upper end portion of the shaft portion. It is extended so that the float can slide the shaft portion and the guide. As a result, it is possible to prevent dust from getting caught in the sliding portion of the float and prevent malfunction.

The specific gravity of the float can be set to be smaller than that of water and larger than that of gasoline, and an oil detection sensor for detecting gasoline can be arranged in the guide portion of the second lid. This makes it possible to determine whether the leaked water or gasoline.

As described above, according to the present invention, it is possible to provide a refueling device capable of early detection of leakage of fuel oil or the like, taking measures against failure of the leakage detection sensor, and determining the type of leaked liquid.

It is the schematic which shows one Embodiment of the refueling apparatus which concerns on this invention. It is a perspective view which shows the internal structure of the refueling apparatus of FIG. It is a partially enlarged view which shows the vicinity of the sensor part of the refueling apparatus of FIG. It is a bottom view of the refueling device of FIG. FIG. 1 is an exploded perspective view showing a first embodiment of the leak detection mechanism of the refueling device of FIG. 1, and (a) and (b) are viewed from different angles. 5A and 5B are views showing a normal state of the leak detection mechanism, in which FIG. 5A is a partially broken front view, and FIGS. 5B and 5C are partially broken perspective views, respectively. c) is viewed from different angles. It is a figure which shows the state at the time of liquid detection of the leakage detection mechanism of FIG. 5, (a) is a partially broken front view, (b) and (c) are partially broken perspective views, and (b). (C) is viewed from different angles. FIG. 1 is an exploded perspective view showing a second embodiment of the leak detection mechanism of the refueling device of FIG. 1, and (a) and (b) are viewed from different angles. 8A and 8B are views showing a normal state of the leak detection mechanism, in which FIG. 8A is a partially broken front view, and FIGS. (B) and (c) are partially broken perspective views. c) is viewed from different angles. It is a figure which shows the state at the time of liquid detection of the leakage detection mechanism of FIG. 8, (a) is a partially broken front view, (b) and (c) are partially broken perspective views, and (b). (C) is viewed from different angles. It is a perspective view which shows the other embodiment of the 1st pipeline which connects the liquid pool part and the leakage detection mechanism shown in FIG.

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

FIG. 1 shows an embodiment of a refueling device according to the present invention. The refueling device 1 includes a refueling mechanism 2 (2A to 2C) including a refueling pump, a flow meter, and the like in a main body housing 10, and a refueling mechanism. From the refueling hose 3 (3A to 3C) connected to 2, the refueling nozzle 4 (4A to 4C) attached to the tip of the refueling hose 3, the display device 5 that displays the amount of refueling, etc., and the refueling mechanism 2 and the like. It is provided with a leak detection mechanism 15 for detecting the leakage of gasoline or water (rainwater or the like), a leak liquid discharge hole 7 for discharging the leaked gasoline or the like, and a notification device 8 for notifying that the gasoline or the like has leaked.

As shown in FIG. 2, a dish-shaped liquid sump portion 13 ( 13A to 13C) are provided. By forming the liquid pool portion 13 into a dish shape, it is possible to prevent the scattering of gasoline or the like that has fallen from above. Further, as shown in FIG. 3, the bracket 14 is fixed to the upper surface of the mounting portion 13a of the liquid pool portion 13A, and the leak detection mechanism 15 is fixed to the bracket 14.

Holes 16A leading to the leak detection mechanism 15 are bored in the liquid pool 13A, and holes 16B and 16C are similarly drilled in the liquid pools 13B and 13C as shown in FIG. The holes 16 (16A to 16C) formed in the liquid pool portion 13 communicate with the inflow passage 15b (see FIG. 5) of the leak detection mechanism 15 through the first pipeline 18, and the outflow passage 15c of the leak detection mechanism 15. (See FIG. 5) communicates with the leaked liquid discharge hole 7 through the second pipeline 19. The bottom plate of the liquid pool portion 13 is inclined toward the hole 16. As a result, gasoline or the like accumulated in the liquid pool portion 13 quickly flows into the leak detection mechanism 15, so that leak detection can be performed quickly.

As shown in FIG. 5, the leak detection mechanism 15 is located in a substantially cylindrical sensor housing 15a, a lower portion of the sensor housing 15a, and an inflow path 15b communicating with a first pipeline 18 and a sensor housing 15a. It is located at the top and includes an outflow passage 15c that communicates with the second pipeline 19. The float 15d having the detected portion 15e and the shaft portion 15f having the detecting portion 15h are housed in the sensor housing 15a. The shaft portion 15f is fixed to the first lid body 15g, and the first lid body 15g closes the bottom portion of the sensor housing 15a. The specific gravity of the float 15d is smaller than that of water and gasoline, and is set to float on water and gasoline. The float 15d slides on the shaft portion 15f as described later. The upper opening of the sensor housing 15a is closed by a second lid 15j provided with a guide portion 15n.

A proximity sensor is configured by the detection unit 15h and the detection unit 15e, and when the float 15d floats by a predetermined height or more, the alarm 8 notifies that gasoline or the like has leaked.

A mounting portion 15k that abuts on the mounting portion 14d of the bracket 14 is provided on the side surface of the sensor housing 15a, and is leaked by a bolt 21 (see FIG. 3) that inserts the mounting hole 14e of the bracket 14 and the mounting hole 15m of the sensor housing 15a. The detection mechanism 15 is attached to the bracket 14.

As shown in FIG. 5, the bracket 14 is provided with bent portions 14b and 14c formed on both upper sides of a substantially rectangular parallelepiped substrate 14a, and mounting portions 14d bent at the lower portion. A mounting hole 14e is bored in the mounting portion 14d, and a daruma hole 14f is bored in the upper part of the substrate 14a.

FIG. 6 shows a normal state in which the leak detection mechanism 15 having the above configuration is assembled and attached to the bracket 14, and gasoline or the like is not leaking. As shown in FIG. 3, the bracket 14 is fixed to the liquid pool portion 13A. At that time, the bent portions 14b and 14c formed in a U shape when viewed from the upper surface of the bracket 14 are brought into contact with the upper surface of the mounting portion 13a of the liquid pool portion 13A, and the bolt 22 is inserted into the small diameter hole of the daruma hole 14f. By fixing it, the posture of the leak detection mechanism 15 can be maintained and the certainty of leak detection can be improved. Further, when the leak detection mechanism 15 is removed by the daruma hole 14f, the bolt 22 can be slid sideways and taken out by simply loosening the bolt 22, so that the bolt 22 can be prevented from being lost.

Next, gasoline from the refueling pump 12 (12A to 12C, see FIG. 2), the flow meter (not shown), etc. of the refueling mechanism 2 (2A to 2C, see FIG. 1) by the leak detection mechanism 15 or the like having the above configuration. The operation of detecting leakage such as is described.

In FIG. 2, when gasoline or the like leaks from the refueling pump 12 or the like, the leaked gasoline or the like falls into the liquid pool portion 13 (13A to 13C), and as shown in FIGS. 3 and 4, the holes 16 (16A to 16C) ), The leak detection mechanism 15 is reached via the first pipeline 18.

In FIG. 6, the leaked gasoline or the like is guided from the first pipeline 18 to the lower part of the sensor housing 15a via the inflow path 15b, and when the amount of the leaked gasoline or the like increases, the float 15d is gradually pushed upward. Finally, when the float 15d rises to the position shown in FIG. 7, the detection unit 15h and the detected unit 15e detect that the float 15d has risen, and an alarm is issued from the alarm 8 to notify that gasoline or the like has leaked. ..

As described above, since the leaked gasoline or the like flows into the sensor housing 15a from the lower part of the sensor housing 15a, the float 15d can be pushed up and raised while utilizing the head kinetic energy of the inflowing gasoline or the like, and the float 15d can be raised. Can be promoted. Further, by providing the outflow passage 15c on the upper part of the sensor housing 15a, a downward gradient to the island or the ground where the leaked liquid is discharged can be obtained, and the discharge effect of the leaked liquid can be improved.

By removing the first lid 15g from the sensor housing 15a after detecting the leakage of gasoline or the like, the gasoline or the like accumulated in the sensor housing 15a can be easily discharged.

Next, a second embodiment of the leak detection mechanism 15 will be described with reference to FIGS. 8 to 10. The same components as the leak detection mechanism 15 shown in FIGS. 5 to 7 are designated by the same reference numbers, and detailed description thereof will be omitted.

The shape of the float 35a of the leak detection mechanism 35 is the same as that of the float 15d in the first embodiment, but the specific gravity is about 0.9, and it is set so as to float on water and sink in gasoline.

Further, the second lid 35b is provided with a truncated cone-shaped guide portion 35c extending downward, and the guide portion 35c is provided with an oil detection sensor (prism sensor) 35d for detecting gasoline. Provided.

The components of the leak detection mechanism 35 other than the float 35a and the second lid 35b are the same as those of the leak detection mechanism 15 in the first embodiment. Further, the bracket 14 is used to fix the leak detection mechanism 35 to the upper surface of the mounting portion 13a of the liquid pool portion 13A.

When this leak detection mechanism 35 is used, in FIG. 2, when gasoline or the like leaks from the refueling pump 12 or the like, the leaked gasoline or the like falls into the liquid pool portion 13 and as shown in FIGS. 3 and 4. The leak detection mechanism 35 is reached through the hole 16 and the first pipeline 18.

In FIG. 9, the leaked gasoline or the like is guided from the first pipeline 18 to the lower part of the sensor housing 15a via the inflow passage 15b. Here, when the leaked liquid is water, it has a higher specific gravity than the float 35a, so the float 35a is pushed upward. When the amount of leaked water increases, the float 35a is gradually pushed upward while sliding on the outer surfaces of the shaft portion 15f and the guide portion 35c, and finally rises to the position shown in FIG. 10, when the detection unit 15h And the detected unit 15e detect that the float 35a has risen, and the alarm 8 issues an alarm regarding water leakage.

Further, when the float 35a floats, the float 35a is guided by the truncated cone-shaped guide portion 35c, and the guide portion 35c can prevent dust and the like from getting caught in the sliding portion. As a result, it is possible to prevent the float 35a from tilting or being hindered from moving, and to maintain smooth sliding of the float 35a, thereby preventing malfunction. Further, it is possible to prevent the float 35a from tilting and not sliding on the outer surface of the shaft portion 15f after floating and not returning to the initial position (normal state position).

On the other hand, when gasoline leaks, the float 35a has a higher specific gravity than the gasoline, so that the float 35a does not surface. The leak of gasoline is detected by the oil detection sensor 35d, and the alarm 8 issues an alarm regarding the leak of gasoline.

As described above, by using the leak detection mechanism 35, it is possible to determine whether the leaked liquid is water or gasoline. By detecting the leakage of water, it can be seen that the packing and the like of the panel existing in the refueling mechanism have deteriorated. It can also be seen that the risk is low if water is detected instead of gasoline. However, when water leaks, the inside of the sensor housing 15a is filled with water, so it is necessary to drain the water.

Next, another embodiment of the first pipeline connecting the liquid pool portion and the leak detection mechanism shown in FIG. 4 will be described with reference to FIG.

FIG. 11 corresponds to a perspective view when FIG. 2 is viewed from the rear direction. In this embodiment, the connection pipe 38A connected to each of the holes 16 is on the side opposite to the side where the leak detection mechanism 15 exists. The first pipeline 38 is composed of the ~ 38C, the lateral running pipe 38D connecting the connecting pipes 38A to 38C, and the introduction pipe 38E to the leak detection mechanism 15. As a result, it is possible to work in a wide space where the leak detection mechanism 15 or the like does not exist, and it is possible to improve workability at the installation site.

In the above embodiment, gasoline and water are detected, but fuel oil other than gasoline can be detected by matching the oil detection sensor 35d with the type of fuel oil.

1 Refueling device 2 (2A to 2C) Refueling mechanism 3 (3A to 3C) Refueling hose 4 (4A to 4C) Refueling nozzle 5 Display device 7 Leakage liquid discharge hole 8 Alarm 10 Main body housing 11 (11A to 11C) Refueling motor 12 (12A to 12C) Refueling pump 13 (13A to 13C) Liquid pool 14 Bracket 15 Leakage detection mechanism 16 (16A to 16C) Hole 18 First pipe line 19 Second pipe line 35 Leakage detection mechanism 38 First pipe Road

Claims (5)

The refueling mechanism housed in the main body housing and
A liquid pool located below the refueling mechanism and
It is provided with a hole that is formed in the liquid pool and leads to a leak detection mechanism .
The leak detection mechanism includes a sensor housing accommodating a float sensor for leak detection, an inflow path at the lower part of the sensor housing, and an outflow path at the upper part, and the inflow path is formed in the liquid pool portion. first conduit is connected which communicates with the hole, the oil supply device according to claim Rukoto second conduit is connected which communicates with the discharge port drilled in the lower portion of the main body housing to the outlet channel. The upper portion of the plate-shaped bracket attached to the leak detection mechanism is formed in a U-shape when viewed from above, and the lower surface of the U-shaped portion is brought into contact with the upper surface of the attachment portion of the liquid pool portion to be fixed. The refueling device according to claim 1. The bottom surface of the sensor housing is open, a lid having a shaft portion having a detection portion inside engages with the opening, and the float having a detection portion inside slides on the shaft portion. The refueling device according to claim 1 or 2 , wherein the detection unit and the detected unit detect the movement of the float in the vertical direction. The sensor housing has an opening on the ceiling surface, a second lid having a guide portion engages with the opening on the ceiling surface, and the guide portion extends vertically above the upper end portion of the shaft portion. are, fueling device according to claim 3, before Symbol float, characterized in that sliding the shaft portion and the guide. The refueling device according to claim 4 , wherein the float has a specific gravity smaller than that of water and larger than that of gasoline, and an oil detection sensor for detecting gasoline is arranged in the guide portion of the second lid. ..

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