JPS6362436B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a tank lorry, and particularly to an oil mixture prevention device therefor.

(Prior Art) Generally, a tank mounted on a tank lorry is divided into a plurality of tank chambers by a partition wall, and at an oil depot, several types of oil are separately loaded into each tank chamber and transported to a predetermined refueling station. It is designed to be able to replenish storage tanks according to each type of oil.

(Problems to be Solved by the Invention) As described above, in a tank lorry, a plurality of oils are loaded in one onboard tank, and there are also a plurality of storage tanks at the filling station corresponding to the plurality of oils. When refueling from the onboard tank to the storage tank, the bottom valve of the oil type that is different from the oil type on the storage tank side may be caused by a mistake in connecting the drain hose of the onboard tank, a mistake in the operator's thinking, or a mistake in the thinking on the receiving side. There was a problem that the fuel tank could open and cause an oil mixture accident.

The present invention has been made in view of the above, and an object of the present invention is to provide a tank lorry that can reliably prevent oil mixing accidents with a simple structure by using electrical control means.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides an on-board tank that is divided into a plurality of tank chambers and each tank chamber is provided with a bottom valve for discharging oil in the tank chamber. ,
A handle connected to the bottom valve, a blocking body that prevents the handle from opening and closing, and a bottom valve operation unit that includes a drive unit such as a rotary solenoid that is linked to the blocking body, and a bottom valve operation unit that is connected to the bottom valve and is connected to the bottom valve, and a bottom valve operation unit that includes a drive unit such as a rotary solenoid that is connected to the blocking body that prevents the handle from opening and closing. In a tank lorry equipped with a discharge hose that communicates with each of the bottom valves, the receiving oil type detector detects the oil type indicator of the storage tank and detects the type of oil in the storage tank. An oil type detection means that emits a corresponding electric signal, a display board that is arranged in the onboard tank or in the operator's cabin and has a signal section and is rotatably supported, and a detection switch that is provided in the vicinity of the display board. An oil type display means that detects the position of the signal part by a detection switch and generates an electric signal corresponding to the oil type, an electric signal from the oil type detection means and an electric signal from the oil type display means. The present invention is characterized by comprising a control means for driving the drive section of the bottom valve operating section only when the values match.

(Function) The oil type detection means emits an electric signal corresponding to the oil type in the storage tank, the oil type display means detects the position of the signal section of the display board and emits an electric signal corresponding to the oil type, Only when the signals from the two means match, the control means drives the drive section of the bottom valve operating section, and the blocking of the handle by the blocking body from opening and closing is released.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

In Figures 1 and 2, 1 is a tank lorry with multiple tank chambers (in this example, 4
An onboard tank 2 having two (1) is mounted.

At the top of the mounted tank 2, a manhole 3 serving as an oil filler port and a bottom valve handle 5 linked to a bottom valve (not shown) are provided for each tank chamber (see Fig. 2). ).

An oil type display device 6 for displaying the oil type in each oil chamber of the mounted tank 2 is provided at the front of each manhole 3. A display plate 8 is rotatably supported on the oil type display 6, and has indicators a, b, c, and d corresponding to, for example, high-octane gasoline, regular gasoline, diesel oil, and kerosene. By rotating the display plate 8 by rotating the cover member 9, as shown in FIGS.
Predetermined displays a, b, c, and d can be exposed through the window 10 of the display. The display board 8 also includes a horizontal circular board part 8a, and a signal board part 8 having an arcuate cross section extending downward at the periphery of the board part 8a.
b (magnetic metal) are arranged in series. Explosion-proof switches 11, 14, 13, 12 are provided on the lower side of the board 8a in correspondence with the above-mentioned indications a, b, c, and d.
They are arranged so as to be spaced apart from each other and close to the signal board portion 8a of the display board 8. As a result, the displays a, b, exposed through the window 10 of the cover member 9,
High-octane gasoline and regular gasoline are supplied to each tank chamber by corresponding to the proximity switches 11, 12, 13, and 14 facing the signal plate portion 8a, which rotates as the values c and d change. The control box 15 is configured to input electric signals S1, S2, S3, and S4 from each tank chamber corresponding to either light oil or kerosene. Therefore, for example, when high-octane gasoline is loaded in the tank chamber of the mounted tank 2, the display plate 8 can be rotated to display the display a through the window 10.
That is, by exposing G, the signal plate portion 8b faces the proximity switch 11 corresponding to high-octane gasoline, and thereby the proximity switch 11
A signal is output from the other proximity switches 12, 1
Since no signal is output from 3 and 14, the signal S1
That is, (1, 0, 0, 0) is input to the control unit 15.

Further, a lid body 19 mechanically linked to a rotary solenoid 18 via a link mechanism 17 is pivotally connected to the upper part of the cylindrical body 16 that houses the bottom valve handle 5 so as to be openable and closable. It is configured to be opened and closed controlled by a solenoid 18. For example, as shown in FIG.
5, 26, 27, and 28 are magnetic metals 25 arranged to correspond to the proximity switches 20a, 20b, 20c, and 20d of the received oil type detector 20, respectively.
a, 26a, 27a, 28a, and thereby corresponds to high-octane gasoline.
When the received oil type detector 20 is applied to the magnetic metal 2
Only the proximity switch 20a corresponding to 5a outputs a signal, and the other proximity switches 20b, 20c, 20
Since d does not output a signal, the receiving oil type detector 20
As the signal S5, the signal (1,0,0,0)
becomes. Each rotary solenoid 18 is electrically linked to a control box 15 and controlled to open and close by the control box 15.

20 is, for example, four proximity switches 20a, 20
Incoming oil type detectors b, 20c, and 20d are arranged in series and are electrically linked to the control box 15.

Reference numerals 21, 22, 23, and 24 are oil fill ports for each independent tank chamber of the storage tank 30, and the oil fill ports 21, 2
Hot water type indicators 25, 2 corresponding to 2, 23, 24
6, 27, and 28 are installed at appropriate positions in the storage tank 30. This allows the discharge hose 2
9 is to be connected to the fuel filler ports 21, 22, 23,
Oil type indicator 25, 26, 27, 2 compatible with 24
8, by applying the oil type detector 20, an electric signal S5 corresponding to the oil type is input to the control box 15, and as a result, in the control box 15, the electric signal S from the oil type indicator 6 is inputted to the control box 15.
1, S2, S3, S4 and the electric signal S5 from the oil type detector 20 are compared, and the oil type indicators 6, 6 output the electric signals S1, S2, S3, S4 that match the electric signal S5. , 6, 6 and rotary solenoids 18, 18, 1 arranged in the same tank chamber.
The output signal S6 is outputted to only the terminals 8 and 18 to operate them, and the lids 19, 19, 19, 19 are opened. That is, the bottom valve Huntsol 5, 5,
Since only the lids 19, 19, 19, 19 of 5, 5 are opened and only the bottom valve handles 5, 5, 5, 5 can be operated, accidents involving oil mixture are reliably prevented.

Next, the procedure for refueling the tank truck 1 will be explained based on FIG. 4.

First, signals S1, S2, S3, S4 corresponding to the oil type loaded in each tank chamber of the onboard tank 2 are transmitted.
The oil type indicators 6, 6, 6, 6 are the voltage conversion circuits 31, 32, 33, 34 of the control box 15.
4-bit comparators 35, 36, 3
7, 38 (for example, HD74LS85, HD7485).

Therefore, when refueling the storage tank 30, first connect the ground wire 39 and connect the discharge hose 2.
9 to predetermined oil fill ports 21, 22, 23, and 24. Next, the incoming oil type detector 20 is connected to the oil fill ports 21, 22, 23, 24 to which the discharge hose 29 is connected.
Applicable to oil type indicators 25, 26, 27, and 28. As a result, the fuel filler ports 21, 22, 23,
An electrical signal S5 corresponding to the type of oil stored in the tank chamber of the storage tank 30 having 24 is sent to each 4-bit comparator 3 via the voltage conversion circuit 40.
5, 36, 37, and 38. the result,
Electrical signal S1 from oil type indicator 6, 6, 6, 6,
S2, S3, S4 are compared with the electric signal S5 from the receiving oil type detector 20, and only when they match, the output signal S is sent to the relays 41, 42, 43, 44.
6 is output, and relay contacts 41a, 42a, 43
Since a and 44a are closed, rotary solenoid 1
8, 18, 18, 18 are energized, thereby causing the mounted tank 2 loaded with the same oil type as the oil type in the oil chamber of the storage tank 30 to be refueled.
Bottom valve handle 5, 5, 5, 5 in the oil chamber of
Only the lids 19, 19, 19, 19 are opened.

As a result, by operating the open bottom valve handles 5, 5, 5, 5 of the lid body 19, 19, 19, 19 and opening the bottom valve, there is no need to worry about mixed oil, and the storage tank 30 to be refueled can be opened. The same type of oil as that in the oil chamber is supplied.

After refueling is completed, perform the operation in reverse to the above procedure to release the connection, and then connect the other refueling ports 21 and 2 in the same way
By connecting to 2, 23, and 24, all tank chambers can be supplied with oil.

In addition, in FIG. 4, 45 is a 5V constant voltage circuit.

(Effects of the Invention) As described above, the present invention uses electricity to drive the drive unit of the bottom valve operating unit only when the type of oil in the storage tank to be refueled matches the type of oil in the mounted tank. Since the configuration is configured to control the oil in a consistent manner, there is no risk of the bottom valve of a different oil type being opened due to a mistake in connecting the discharge hose, the operator's thinking, or the receiving side's thinking, thereby preventing oil mixing accidents. can be prevented,
Furthermore, the structure is simple and inexpensive, which is an excellent advantage.

[Brief explanation of drawings]

The drawings illustrate embodiments of the present invention; FIG. 1 is an overall configuration diagram of a tank truck, FIG. 2 is an enlarged detailed view of the main parts in FIG. 1, and FIGS. ) and the proximity switch, Figure 4 is an electrical circuit diagram of the control circuit, Figure 5 is an explanatory diagram of the oil type indicator installed in the onboard tank, and Figure 6 is the received oil type detector. It is a figure which shows the relationship between and the oil type indicator provided in the storage tank. 1...tank truck, 2...equipped tank, 3...
... Manhole, 5 ... Bottom valve handle, 6 ... Oil type indicator, 8 ... Display board, 11, 12, 13, 14
... Proximity switch, 15 ... Control box, 18 ... Rotary solenoid, 19 ... Lid, 20 ... Receiving oil type detector, 21, 22, 2
3, 24... Fuel filler port, 25, 26, 27, 28...
...Oil type indicator, 30...Storage tank.

Claims (1)

[Claims] 1 Divided into multiple tank rooms, each tank room has:
A mounted tank provided with a bottom valve for discharging oil in the tank chamber, a handle linked to the bottom valve, a blocking body for preventing the handle from opening and closing, and a drive unit such as a rotary solenoid linked to the blocking body. In a tank lorry equipped with a bottom valve operation section consisting of a bottom valve operating section and a discharge hose communicating with each bottom valve for unloading to a storage tank at a gas station, the tank truck is arranged at a suitable position on the vehicle body and has an oil type indicator of the storage tank. An oil type detection means for detecting the oil type detected by a receiving oil type detector and emitting an electric signal corresponding to the oil type in the storage tank; an oil type display means comprising a display board and a detection switch provided in close proximity to the display board, the detection switch detects the position of the signal section and generates an electric signal corresponding to the oil type; A tank lorry characterized by comprising: control means for driving a drive section of the bottom valve operating section only when an electric signal from the oil type detection means and an electric signal from the oil type display means match.