JPH0446839B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for preventing oil mixture in a tank truck that stores different types of liquids in a plurality of tank chambers to prevent erroneous loading or unloading of different types of liquids. It is related to the device.

Generally, when a tank truck transports different types of liquids such as diesel oil, kerosene, high octane gasoline, regular gasoline, etc. in multiple tank compartments, loading or unloading the wrong type of liquid is common. In other words, the oils may be mixed, resulting in large losses such as re-refining or disposal due to mixing of liquids. In addition, in the event that diesel oil is placed in a tank where gasoline vapor is present,
If kerosene, etc. were injected, there was a risk of explosion due to static electricity discharge.

Conventionally, in order to prevent the wrong type of liquid from being unloaded by mistake, the type of liquid in each chamber was written or memorized when the liquid was loaded, and the type of liquid in that chamber was recorded when unloading. However, if a different type of liquid is accidentally loaded during loading, or when unloading,
It was not possible to prevent mistakes such as unloading to the wrong tank and unloading into a tank containing another type of liquid, and this was insufficient as a measure to prevent oil mixture. Therefore, in order to detect the type of liquid in the above-ground storage tank and check it with the storage device, a connecting terminal connected with an electric wire cord from the storage device installed in the tank truck is connected near the inlet of the above-ground storage tank. One possible method is to detect the type of liquid by connecting it to a connection piece provided for each type of liquid, but operating an electrical cord in a storage area where flammable gas may be present is not recommended. There was a risk of ignition from sparks caused by damage to the electrical cord, and the operation of connecting the connecting terminal to which the electrical cord was connected to the connecting piece was cumbersome, which could impede work efficiency.

The present invention provides a storage device that stores the type of liquid in each chamber at the time of loading, collates a key piece prepared in advance for each above-ground storage tank with the storage device, and links the storage device and the key piece. When the liquid types match,
By providing a safety device that notifies that the liquid in the tank chamber and the storage tank match, or that allows opening of the liquid passage for loading or unloading,
It completely prevents mistakes in the type of liquid during loading or unloading, prevents loss due to re-refining of mixed oil, disposal, and the risk of explosion. Moreover, a key piece is provided in advance for each above-ground storage tank. A device to prevent oil from being mixed with a tank truck is installed so that the storage device is checked at the location of the tank truck, and the type of liquid in the above-ground storage tank can be checked and work can be carried out safely without the use of dangerous electrical cords. This is what we are trying to provide.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

1 to 13, 1 is a tank truck with a tank 5 mounted on a chassis 3, and the tank 5 has a plurality of tank chambers 9,
The tank chamber 9 is divided into 9, 9, and an inlet 11 for loading liquid is provided at the upper part of each tank chamber 9 so as to be openable and closable. Also, a bottom valve 13 is provided at the bottom of each tank chamber 9.
A discharge valve 17 is provided via a pipe 15, and the bottom valve 13 is opened and closed by a bottom valve handle 19 provided in the tank chamber 9 via a connecting rod 21. 23 is a storage tank 25 on the ground that stores liquid purified by loading equipment provided for each type of liquid, a pump 27, a pressure regulating valve 29, and a flow meter 3.
1, and is injected from the injection port 11 of the tank truck 1 through an injection nozzle 33. 35
is a workbench, and 37 is a climbing ladder. Reference numeral 39 indicates unloading equipment provided for each type of liquid to receive liquid from the tank truck 1, and is provided with an injection pipe 43 leading to a storage tank 41 buried above ground.
connected by. 47 is a ventilation pipe communicating with the atmosphere.

The injection port 11 is configured as follows. That is, the injection port 11 is fixed to a manhole cover 51 that covers a manhole 49 opening at the top of the tank chamber 9, and is covered by an injection port cover 53. 55
is a handle for pressing and tightening the inlet cover 53, and is screwed onto an arm 61 that is pivotally connected to a bracket 57 fixed to the manhole cover 51 so as to be able to swing up and down about a shaft 59, and the inlet cover 53 is attached to the lower end of the arm 61. is supported so that it can swing freely in any direction. 63 is a hook that is pivotally attached to the manhole cover 51, and the upper end is connected to the arm 6.
It removably engages with a pin 65 fixed to the other bridge of 1. Numeral 67 is a petal fixed to the hook 63, which, when stepped on with the foot, causes the hook 63 to separate from the pin 65 against the bullet 69. 71 is a safety device equipped with a storage device 73, and a manhole cover 51
The opening movement of the hook 63 is regulated by a locking pin 75 that is fixed to and protrudes and retracts.

The bottom valve 13 is constructed as follows. That is, 77 is a valve body that opens and closes a passage 79 communicating with the pipe 15, and is fixed to the lower end of a valve rod 83 that is screwed into a support frame 81 so as to be able to move up and down. Through the bottom valve handle 19
is connected to. The bottom valve handle 19 is constructed as follows. That is, 89 is a handle shaft rotatably fitted into a shaft cylinder 91 fixed to the upper part of the tank chamber 9, the handle 19 is fixed to the upper end, and the lower end is connected to the universal joint 87. 9
3 and 93 are locking pieces fixed by screws 94 facing each other across the handle shaft 89;
It is removably locked to a locking pin 75 of a safety device 71 equipped with a locking pin 75. A bracket 95 supports the safety device 71, and is fixed to the shaft cylinder 91 with screws 97, 97.

The safety device 71 and the storage device 73 are configured as follows. That is, the locking pin 75 is slidably fitted into the main body 101 of the safety device 71, and the locking pin 75 is slidably fitted into the main body 101 of the safety device 71.
03 in the retraction direction. 1
05 is a locking groove with a semicircular cross section arranged at equal intervals on the outer circumference of the locking pin 75, and 107 is a locking hole provided vertically in the main body 101, which corresponds to the semicircular cross section of the locking groove 105. It is provided with a circular cross section at the position where it is located. Reference numeral 109 denotes a cylindrical locking piece that is slidably fitted into the locking hole 107. The locking piece 109 is biased upwardly by the bullet 111 and is attached to the lid portion 113 that shields the semicircular portion of the locking hole 107. Therefore, the raised position is restricted, and in this position, the locking groove 105 is fitted, and the locking pin 75 is locked in the protruding state. Reference numeral 115 is a memory piece, which is stored in A, B, or A in FIG. 12 depending on the type of liquid.
It has a shape like C and D, and the main body 101 when loading.
When inserted into the engagement hole 117 provided in , it comes into contact with a predetermined locking piece 109 . The engagement hole 117 is provided along the outer periphery of the locking pin 75. Storage device 7
3 is the memory piece 115 and the memory piece 1 in this embodiment.
It is a general term for the engagement hole 117 into which 15 is inserted,
By inserting a memory piece 115, the type of oil in the tank chamber 9 is memorized. 119
is a key piece, depending on the type of oil, A,
The memory pieces 115 are inserted into the engagement holes 117 in shapes such as B, C, and D, overlapping each other. key piece 119
is inserted into the engagement hole 117 overlapping the memory piece 115 corresponding to the same type of liquid, and when pressed downward together, all the locking pieces 109, 109,
... is pushed down against the bullet 111, all the locking pieces 109 are released from the locking grooves 105, and the locking pin 7
5 is provided so as to be drawn in to the right in FIG. 8 by the ammunition 103. When the types of oil in the memory piece 115 and the key piece 119 do not match, one of the locking pieces 109 does not descend and locks in the locking groove 105, and the locking pin 75 is not pulled in. 7
To make 5 stick out, match the memory piece 115,
While pressing both key pieces 119 downward, push the rear end of the locking pin 75 to the left in FIG. 105, and the locking pin 75 maintains a protruding state.

Reference numerals 121 and 123 are storage boxes for the key pieces 119 provided in the loading equipment 23 and the unloading equipment 39, respectively. This storage box 119 contains other types of key pieces 119.
Either create a structure that cannot accommodate memory fragment 1, or
15. It is even safer if the key piece 119 can be identified by color.

In the above embodiment, when loading, first, the type of liquid to be stored in each tank chamber 9 is determined, and the memory piece 115 corresponding to this type is
After being inserted into the engagement hole 117 of the storage device 73 of the inlet 11 of each tank chamber 9, the tank truck 1 is moved to the loading facility 23 according to the type of liquid.
When the key piece 119 of this type of liquid provided in the storage box 121 of the loading equipment 23 is taken out, inserted into the storage device 73 of the injection port 11 to be loaded, and pressed downward together with the already inserted memory piece 115, If the types of liquids do not match, the locking pin 75 will not be retracted and the inlet 11 will not be able to be opened. When the types of liquid match, the locking pin 75 retracts, so the handle 55 can be loosened, the pedal 67 can be depressed, the hook 63 can be removed, and the inlet 11 can be opened, allowing the liquid to be dispensed from the inlet nozzle 33. Even if the oil is injected, there will be no mistake in mixing the oil.

Next, the inlet 11 is closed, the locking pin 75 is pushed out, the key piece 119 is returned to the storage box 121, and the memory piece 115 is attached to the bottom valve handle 19 of the same tank chamber 9.
and insert it into the storage device 73 of. In this state, transport the corresponding liquid type to the unloading equipment 39,
While connecting the hose 45, the key piece 119 is taken out from the storage box 123 and inserted into the storage device 73 of the bottom valve handle 19. Key piece 119 and memory piece 1
15 do not match, the bottom valve handle 119 cannot be rotated and the bottom valve 13 will not open and liquid cannot be discharged. If the liquid types match, the locking pin 7
5 is pulled in, and the bottom valve 1 is pulled in by the bottom valve handle 19.
3 is opened and the liquid is discharged into the underground storage tank 41, so there is no chance of unloading the wrong type of liquid. Furthermore, if the key piece 119 is provided so that it cannot be taken out unless the hose 45 is connected to the injection pipe 43, safety will be further ensured.

Since the present invention is configured as described in the claims, it prevents mistakes in the type of liquid when loading or unloading liquids, eliminates losses due to re-refining or disposal of mixed oil, and eliminates the risk of explosion. This can be prevented beforehand, and the type of liquid in the above-ground storage tank can be checked without using an electric cord, so the work can be carried out safely and easily.

Furthermore, according to the invention set forth in claim 1, it is possible to prevent the wrong key piece 119 from being used. Furthermore, according to the second aspect of the invention, safety can be further improved by issuing a warning.
Furthermore, according to item 3, the present invention can also be applied to manually opened/closed injection ports and bottom valves. Furthermore, according to the fourth aspect of the invention, it is possible to prevent oil from being mixed during loading.

In addition, FIG. 14 shows another embodiment, in which a magnetic card type memory piece 127 is sent and stored in an electrical memory device 125 provided in each room, and an electrical safety device 129 is installed. magnetic card type key piece 1
31 and when the types of liquid in the memory piece 127 and the key piece 131 match, the magnetic coil 133
is activated, and the injection port 11 and bottom valve handle 19 are unlocked. In addition, instead of this magnetic card type, the notation on the card may be read optically and processed electrically, and instead of the memory piece 127, a push-button type memory device is used when loading each compartment. Memorize the type of liquid and press key piece 13
You may unload the cargo after checking with 1. Furthermore, the present invention may be implemented only for loading or unloading, and when the types of liquids match, an alarm,
It may be provided to notify by a lamp, or indirectly to notify whether or not they match by notifying by an alarm or lamp when they do not match.

Incidentally, the above-ground storage tank as used in the present invention refers to an above-ground tank in contrast to a vehicle tank, and includes above-ground tanks.

Note that the present invention is not limited to the above-mentioned embodiments, but can be implemented in other embodiments. Further, the symbols shown in the claims do not limit the technical scope of the present invention.

[Brief explanation of the drawing]

Figures 1 and 2 are side views of a tank truck equipped with one embodiment of the present invention, Figures 3 and 4 are side views and plan views of essential parts, respectively, and Figures 5 and 6 are views of other parts, respectively. A side sectional view of the main part of the same, an enlarged plan sectional view of the same, 7th
The figures are side sectional views of other important parts, Figures 8, 9, and 1.
0 and 11, respectively, a plan sectional view, a front sectional view, and a front sectional view at another position of one embodiment of the present invention,
A sectional side view, FIGS. 12 and 13 are side views of a memory piece and a key piece, respectively, and FIG. 14 is a schematic illustration of another embodiment. Explanation of the symbols representing the main parts of the drawing, 1...
Tank truck, 9...Tank chamber, 11...Inlet, 13...Bottom valve, 19...Bottom valve handle, 2
5, 41...Storage tank, 43...Injection pipe, 71
...Safety device, 73...Storage device, 119...Key piece.

Claims (1)

[Scope of Claims] 1. In a tank truck 1 that stores different types of liquid in a plurality of tank chambers 9, a storage device 73 is provided at an appropriate position of the tank truck 1 to store the type of liquid in each tank chamber 9 at the time of loading. ,12
5 is provided at a position close to the injection pipe 43 provided for each storage tank 41 of the above ground unloading equipment,
Key pieces 119 and 131 are provided corresponding to the type of liquid in the storage tank 41 of the unloading equipment, and the key pieces 1
91, 131 against the storage device 73, 125 at the location of the tank truck 1, and the storage device 73, 125 and the key piece 119, 131
Safety devices 71, 129 that notify that the liquids in the tank chamber 9 and the storage tank 41 of the unloading equipment match, or open the liquid passage for unloading when the types of liquids match. A tank truck oil mixture prevention device characterized by being provided with. 2. In a tank truck 1 storing different types of liquid in a plurality of tank chambers 9, storage devices 73, 12 are provided at appropriate positions on the tank truck 1 to store the type of liquid for each tank chamber 9 at the time of loading.
5, each located close to the injection nozzle 33 provided for each storage tank 25 of the above-ground loading facility,
Alternatively, a key piece 11 corresponding to the type of liquid in the storage tank 25, 41 is placed near the injection pipe 31 provided for each storage tank 41 of the unloading equipment.
9,131 are provided, and the key piece 119,131 is
The storage device 73, 125 is checked against the storage device 73, 125 at the location of the tank truck 1.
125 and the key pieces 119, 131 match, a safety device 71, 129 is provided to notify that the liquids in the tank chamber 9 and the storage tanks 25, 41 match. Tank truck oil mixture prevention device. 3. In a tank truck 1 that stores different types of liquids in a plurality of tank chambers 9, a locking means for locking the opening/closing mechanism that opens and closes the loading inlet 11 in the closed position or a bottom valve 13 for unloading is provided. A locking means is provided for locking the movement of the bottom valve handle 19 to the closed position when the bottom valve handle 19 opens and closes, and each tank chamber 9 is placed at an appropriate position on the tank truck 1 during loading.
Storage device 73, 125 that stores the type of liquid for each
The storage tank 25 is provided at a position close to the injection nozzle 33 provided for each storage tank 25 of the above-ground loading equipment, or at a position adjacent to the injection pipe 31 provided for each storage tank 41 of the unloading equipment. , 41, the key piece 119 corresponds to the type of liquid,
131 is provided, and the key pieces 119, 131 are stored in the storage device 7 at the position of the tank truck 1.
safety device 71, 129 that releases the lock between the tank chamber 9 and the locking means when the types of liquids in the storage device 73, 125 and the key pieces 119, 131 match according to item 3; A tank truck oil mixture prevention device characterized by being provided with. 4. In a tank truck 1 storing different types of liquid in a plurality of tank chambers 9, storage devices 73, 12 are provided at appropriate positions on the tank truck 1 to store the type of liquid for each tank chamber 9 at the time of loading.
5, and key pieces 119 and 131 corresponding to the type of liquid in the storage tank 25 are provided at positions close to the injection nozzle 33 provided for each storage tank 25 of the above-ground loading equipment, and the key pieces 119, 1
31 with the storage devices 73, 125 at the position of the tank truck 1, and when the types of liquids in the storage devices 73, 125 and the key pieces 119, 131 match, the tank chamber 9 and the loading A device for preventing oil mixture in a tank truck, characterized in that it is equipped with safety devices 71 and 129 that notify whether the liquids in the storage tank 25 of the equipment match or open a passage for loading liquid.