JPH0755720B2 - Incorrect oil supply prevention device for oil storage tank - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to petroleum transported by a tank truck.
The present invention relates to an erroneous oil supply prevention device for an oil storage tank that supplies a predetermined oil to a predetermined oil supply port without error when supplying oil from the oil supply port of a gas station to the oil storage tank.

[Conventional technology]

Petroleum transported from the oil depot to the gas station is
Various types of oil such as regular gasoline, high octane gasoline (high octane), kerosene, and light oil are carried in a tank lorry in which multiple defined containers are stacked. Refueling
As shown in FIG. 5 and FIG. 6, a predetermined one of the bottom valve operation handles 2 formed on the tank upper floor of the tank truck 1 is opened to open the valve, and the valve is led to the rear end portion or the side portion to open and close. It is common to supply the oil from the oil supply port 3a of the common oil supply pipe 3 having the lever 3b to the oil supply port 5 of the corresponding oil storage tank of the gas station via the oil supply hose 4. For refueling the oil storage tank, an operator connects the supply pipe 3 at the rear end or the rear of the tank / lorry and the oil supply port of each oil storage tank with an oil supply hose 4 to make regular, high octane, kerosene, light oil, heavy oil. This is done by sequentially changing the positions of the oil filling port and the bottom valve operation handle of the tank / lorry.However, conventionally, the work of connecting and replacing the oil supply hose to the oil filling port of a predetermined oil storage tank and The operator opens and closes the corresponding valve by relying only on the visual recognition and storage means, in which the operator visually confirms and stores the display of the oil inlet and the bottom valve operating handle.

For this reason, accidents in which oil of a different type was accidentally applied when the oil was injected from the tank truck to the oil injection port of the oil storage tank were not extinct. Therefore, in order to prevent such a mixed oil accident, in the coupling of the oil inlet and the tank bottom valve of the tank truck,
A lock device is provided for each oil type, and a key for unlocking each lock device is provided separately for each oil type.
An oil mixing prevention lock device has been developed which is configured so that only the locking device of the coupling of the oil inlet that matches the unlocking key of the tank bottom valve of a tank truck vehicle is unlocked.
It was disclosed in Japanese Patent No. 694.

[Problems to be Solved by the Invention]

However, it has been found that the oil mixing prevention lock device disclosed here still has a problem that cannot be solved. That is, according to this oil mixing prevention clock device, a lock device (M) provided for each oil type at each oil inlet of a large number of underground tanks, a large number of hatch handles for each tank chamber of the tank / lorry, and A number of keys are required to unlock the lock device (M ') provided for each oil type on the bottom valve handle. Therefore, the driver of the tank truck or the employee of the gas station must collectively possess and store multiple types of keys that are different for each filler port, and also search for the required key from a large number of keys. There is the inconvenience of having to take it out.

The present invention solves such problems of the prior art, and a key possessed by a driver of a tank truck or an employee of a gas station is for unlocking a lock for locking a lid of a filler port. It is an object of the present invention to provide an erroneous oil supply prevention device for an oil storage tank, which only requires a key and can reliably prevent erroneous oil supply.

[Means for Solving the Problems]

As a concrete means for achieving the above object, the present invention is a supply pipe in which a predetermined oil that is divided and loaded in a tank of a tank truck is led to a rear end portion or a side portion of the tank truck. In a refueling device for an oil tank that supplies oil to a corresponding refueling port of a gas station via a refueling hose, it can be removed from the refueling port when the cover of the refueling port is opened. Among the plurality of bottom valve operation handles formed on the floor of the upper surface, the bottom valve operation handle of a specific oil type is provided with an unlocking means capable of unlocking only the lock, and the oil type in the bottom valve operation handle To the oil storage tank, which is equipped with locking / unlocking means that can close the lid to the oil inlet only when the oil type of the oil inlet matches the oil type of the oil inlet. Configured the erroneous oil supply prevention device.

[Action]

With the above configuration, when the predetermined oil type in the plurality of bottom valve operation handles formed on the tank upper floor of the tank / lorry and the oil type of the oil inlet to correspond to the different oil type are different, the unlocking means Does not match the lock of the bottom valve operating handle,
I can't unlock this. In addition, the unlocking confirmation means
It refuses to lock the unlocking means, and alerts the operator to a mistake.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

1 to 3 are perspective views for explaining the locked / unlocked state of the locking / unlocking means 6 provided in the oil filling port 5 of each oil storage tank of the gas station. Cover the oil inlet 5 with the lid 7,
A hooking member 7a which is hooked to the lip 5a of the oil inlet 5 on the lid 7.
Then, the engaging member 7b is vertically provided at a position facing this. On the outer side surface of the oil injection port 5, a connecting member 5b is attached at a position corresponding to the engaging member 7b. The engaging member 7b and the connecting member
Engagement holes 7c, 5c are drilled in each of 5b, and a padlock 8
It is penetrated and locked. The locking / unlocking means 6 comprises a pair of members, that is, a fixing member 9 and a detachable member 10. The fixing member 9 is composed of a mounting portion 9a for mounting the outer peripheral surface 5d of the oil filling port 5 and a tongue piece 9b having an engaging hole 9c protruding outward, and a fastening band 11 is provided on the outer peripheral surface 5d of the oil filling port. It is installed and fixed. The attachment / detachment member 10 is formed with a cutout portion 10c extending from the upper side to the lower portion of the central portion thereof, and the engagement member 7b and the side edge of the oil filling port 5 are formed so that the cutout portion 10c straddles the connecting member 5b. The tongue piece 10b at the upper end is fitted in between and is pressed by the engaging member 7b of the lid 7. The fixing member 9 is provided below the attaching / detaching member 10.
To form the leg portion 10a that engages with the engagement hole 9c of the above, and to unlock only the lock of the handle of the same oil type in the plurality of bottom valve operating handles 2 formed on both sides of the tank upper surface of the tank truck on one side thereof. The key 12 which is the unlocking means is attached. Therefore, the locking / unlocking means 6 in the locked state in which the fixing member 9 and the detachable member 10 are engaged cannot unlock unless the padlock 8 is unlocked and the lid 7 is opened. .

FIG. 4 is a perspective view of the bottom valve operation handle 2 formed with the required number of tank upper floors 1a of the tank truck. The support shaft 2a of the bottom valve operation handle 2 is screwed into the base 1b, and the valve is opened / closed by rotation of the handle. On the base 1b, a lock fixing metal fitting 13 including a mounting portion 13a on its outer peripheral surface and a tongue piece 13b protruding outward is fixed by a tightening band 14. In the hole 13c formed in the tongue piece 13b of the lock fixing metal fitting,
A ring 15 is fitted, the ring 15 and the bottom valve operating handle 2 are connected by a ring-shaped chain 16, and the end is locked with a lock 17. Therefore, the bottom valve operating handle 2 is prevented from rotating by the locked ring-shaped chain 16. The locked lock 17 is located in the unlocking means provided in the locking / unlocking means 6 equipped in the oil inlet 5, that is, the key 12 attached to the detachable member 10, and only the lock with the same oil type can be unlocked. It is possible.

Next, the lock confirmation means provided in the lock / unlock means 6 will be described with reference to FIGS. 1 to 3. The locking confirmation means is composed of a fixing member 9 mounted and fixed to a specific oil filling port, and a detachable member 10 corresponding thereto. That is, an engagement hole 9c formed in a specific fixing member, for example, the fixing member 9 mounted and fixed to a regular oil filling port, is different from an engaging hole formed in another fixing member of the oil filling port such as high octane or kerosene. When the attaching / detaching member (10 'in FIG. 3) having different engaging positions and having incompatible legs is attached, the position of the engaging hole 9c does not match and the height of the leg 10a is increased. Only it will be in a state of floating.
Therefore, even if the oil filling port 5 is covered with the lid 7, it is impossible to close and lock the lid 7 because the unattachable detachable member interferes. Therefore, the operator is informed that the attachment / detachment member having the key 12 for unlocking the lock of the bottom valve operation handle is not attached to a predetermined oil inlet but is attached to a different oil inlet. Therefore, since the attachment / detachment member has been replaced with a port other than the predetermined oil supply port, there is no possibility of supplying a different oil type at the time of the next oil supply. This locking confirmation means, if the color of the fixing member mounted and fixed to the oil filling port of each oil storage tank is made different, and the colors of the corresponding attaching / detaching members are made to match each other, it is possible to identify by the color as well. It is more effective to prevent erroneous operation.

The operation of refueling the oil tank with the erroneous oil refueling prevention apparatus according to the present invention is described below.

(1) The operator of the tank truck receives a key from the person in charge of the gas station to open the lid of the oil filling port of the oil storage tank.

(2) Connect one end of the oil supply hose to the oil supply port of the supply pipe led to the rear end or the side of the tank truck.

(3) Unlock the oil inlet (regular) of the designated oil storage tank,
Open the lid.

(4) Remove the unlocking means (attaching / detaching member with a key) provided in the locking / unlocking means.

(5) Connect the other end of the oil supply hose to this oil inlet.

(6) Unlock the lock of the predetermined bottom valve operation handle (regular) on the tank upper floor of the tank / lorry with the key of the detachable member removed above and open it.

(7) Open the lever on the side of the tank / lorry supply pipe.

(8) Refueling (9) Same as above Close the lever.

<The above is the regular refueling completion> (10) Unlock the high-octane refueling port of the next refueling plan and open the lid (This operation is performed during regular refueling and is waiting. Efficient).

(11) Remove the keyed attaching / detaching member (high octave) for locking / unlocking means.

(12) Close the bottom valve operation handle (regular) on the tank floor of the tank / lorry.

(13) Move the other end of the refueling hose from regular to the high-octane lubrication port and connect it.

(14) The detachable member with a key (regular) is engaged with the fixing member of the oil inlet (regular), the lid is closed, and the lock is locked.

(15) With the key of the detachable member (high-octane), unlock the lock of the bottom valve operation handle (high-octane) on the tank upper floor of the tank truck to open the valve.

(16) Open the lever on the side of the tank / lorry supply pipe.

(17) Refueling (18) Same as above Close the lever.

<The above is the completion of refueling of high-octane oil> After that, kerosene, light oil, and heavy oil are refueled sequentially by the same operations as in (10) to (18) above. Finally, (19) Turn the bottom valve operation handle (heavy oil) on the tank top floor of the tank truck to close the valve.

(20) Remove the other end of the oil supply hose from the oil inlet (heavy oil).

(21) The detachable member (heavy oil) with a key is engaged with the fixing member of the oil inlet (heavy oil), the lid is closed, and the lock is performed.

(22) Remove one end of the refueling hose from the refueling port of the tank / lorry supply pipe and store it.

(23) Return the locked lid key to the person in charge at the gas station.

This completes all refueling work.

As described above, the fixing members attached and fixed to the oil filling ports of the respective oil storage tanks are distinguished by color, for example, red for regular, black for high octane, white for kerosene, blue for light oil, and yellow for heavy oil. However, if the colors of the detachable members corresponding to the above-mentioned respective fixing members are made to match each other, it is possible to confirm the locking by the engagement of the fixing member and the detachable member and also to make a visual identification, so that an erroneous operation can be prevented in advance.

FIGS. 7 to 9 show a lock for locking the bottom valve operation handle formed on the floor of the tank upper surface of the tank truck and other modes,
FIG. 7 shows a so-called wire lock system, and the bottom valve operating handle 2 and the lock fixing metal fitting 12 shown in FIG.
A flat key 1 attached to the detachable member 10 with a wire lock 17 'connecting to
It is locked and unlocked by 2 '. FIG. 8 and FIG. 9 show a lock system using a cap, in which an inner cylinder 21 is provided below the bottom valve operating handle 2, and an outer cylinder 22 is provided on the outer circumference of the inner cylinder 21.
Is arranged so that it can slide up and down. At the upper end of the outer cylinder 22, a shaft for preventing rotation is pierced through the gap of the handle.
The shaft 23 has a bart engaging groove 23a formed on the inner edge of the upper end thereof. On the other hand, a cap with a cylinder lock 24 on the top
The engaging hole 25a is formed in 25 to engage with the rotation preventing shaft 23, and a disc-shaped bar 26 is rotatably provided at the lower end of the bar 25 from the inside to the bar engaging groove 23a. It bites and locks the bottom valve operating handle 2. To unlock, insert the key 12 attached to the attaching / detaching member equipped in the oil filling port of the oil storage tank into the cylinder lock 24, and rotate in a predetermined direction to release the cap 25.
The disk-shaped bar 26 at the bottom of the
The cap 25 is detached from 23a, and the cap 25 is detached from the end portion of the rotation preventing shaft 23. In this state, when the outer cylinder 22 is lowered along the inner cylinder 21 from the position indicated by the solid line to the position indicated by the chain line, the rotation-preventing shaft
Since 23 also descends and disengages from the bottom valve operating handle 2,
The handle is rotatable and the valve can be opened. On the top surface of the cap 25, the type and capacity of the oil contained in the tank are described, which also serves as a display function.

〔The invention's effect〕

As described above, according to the present invention, the predetermined oil separately stored in the tank of the tank truck is stored in the gasoline tank.
When supplying the oil to the corresponding lubrication port of the stand, it can be removed from the lubrication port when the lid of the lubrication port is opened. Provided with an unlocking means capable of unlocking only a lock provided on a bottom valve operation handle of a specific oil type, and
Locking / unlocking means capable of closing the lid to the oil inlet is provided at the oil inlet of each oil storage tank only when the oil type in the bottom valve operation handle matches the oil type of the oil inlet. Therefore, the operator unlocks the lock that locks the bottom valve operation handle of the specific tank containing the oil to be lubricated by simply opening the lid that closes the lubrication port for lubrication. An unlocking means (key) for locking can be obtained. Therefore, the key that the operator needs to carry is only the one for unlocking the lock that locks the oil inlet and the lid that closes the oil inlet. It is not necessary to collectively possess and store a plurality of different types of keys, and there is no need to find the necessary key among a large number of keys.

When trying to open the bottom valve operating handle of a different oil type with the unlocking means (key) obtained from the oil filling port, the unlocking means does not match the lock of the bottom valve operating handle, and this is unlocked. I can't lock it. Also, if the attaching / detaching member provided with the unlocking means for unlocking the lock that locks the bottom valve operation handle does not match the fixing member provided on the oil inlet, the attaching / detaching member can be attached to the fixing member. Since the lid of the oil inlet cannot be closed, the operator is informed of an erroneous operation, and there is no fear of supplying a different oil type. Therefore, the predetermined oil in the tank truck can always be supplied to the predetermined oil inlet of the gas station. That is, the lock of the bottom valve operation handle of a predetermined oil type is unlocked with the key of the detachable member removed from the predetermined oil inlet, and when refueling is completed, the lock of this bottom valve operation handle is locked,
Return the attaching / detaching member attached with the key to the fixing member of the locking / unlocking means, and after confirming that it is the predetermined lubrication port,
Since the lock of the next bottom operation handle is unlocked with the key of the detachable member in the applying / unlocking means of the lubrication port to be refueled next,
It is possible to prevent erroneous lubrication from the viewpoint of work procedure. Therefore, as in the conventional case, the operator visually confirms and memorizes the display of the oil inlet and the bottom valve operation handle. Occurrence of a situation such as opening cannot occur in the present invention, and there is no risk of accidental refueling accident.

[Brief description of drawings]

Each of the drawings is a diagram of an embodiment of the present invention, and FIG. 1 is a schematic view of an oil supply port installed in an oil tank of a gas station.
FIG. 2 is a perspective view showing the unlocked state of the unlocking means, FIG. 2 is a perspective view showing the unlocked state of the same, and FIG. 3 is a state in which the locking / unlocking means is closed by mounting different types of detachable members. It is a front view which shows the state which cannot be performed. FIG. 4 is a perspective view of a bottom valve operation handle formed on the floor of the tank / lorry top surface, FIG. 5 is a side view showing the connection between the tank / lorry and the fueling port of the gas station, and FIG. 6 is It is a perspective view of the rear end part of a tank truck. FIG. 7 is a perspective view of a lock for locking the lock of the bottom valve operating handle, and FIGS. 8 and 9 are perspective views and sectional views showing other locking modes. 1 ... Tank / lorry, 2 ... Bottom valve operation handle 3 ... Supply pipe, 4 ... Oil supply hose 5 ... Lubrication port, 6 ... Locking / unlocking means 7 ... Lid, 8 ... Padlock 9 ... … Fixing member, 9c …… Engagement hole 10 …… Removable member, 10a …… Legs 12 …… Unlocking means (key), 13 …… Lock lock fixing metal fitting 17 …… Lock

Claims (1)

[Claims] 1. A predetermined oil that is separately loaded in a tank of a tank lorry is supplied from a supply pipe led to a rear end portion or a side portion of the tank lorry to a gasoline hose through a refueling hose.
In the device for supplying oil to the oil tank that supplies oil to the corresponding oil inlet of the stand, when the lid of the oil inlet is opened, it can be removed from the oil inlet, and there are multiple bottoms formed on the floor of the tank top surface of the tank truck. The valve operating handle is provided with an unlocking means capable of unlocking only the lock provided on the bottom valve operating handle of a specific oil type, and the oil type of the bottom valve operating handle matches the oil type of the oil inlet. An erroneous oil supply prevention device for an oil storage tank, wherein locking / unlocking means that can close the lid to the oil injection opening only when the oil is added is provided at each oil injection opening of each oil storage tank.