JPH05278797A - Oil-mixing and overflow preventing device - Google Patents

Abstract

PURPOSE:To prevent mixing of oil and overflow and obviate the need of wire connection of a vehicle-mounted controller to the outside by providing the vehicle-mounted controller equipped with a wireless liquid level meter, an oil sort judging device and an overflow detecting device. CONSTITUTION:A wireless liquid level meter 1 is installed on a tank T1 and transmits signals of the tank number and liquid level at specified time intervals. A vehicle-mounted controller 10 is connected to bottom on-off valves 5a-5c and provided with a loading IC card writer-reader 11, an oil filling station IC card writer-reader 12 and an antenna 17. The vehicle-mounted controller 10 judges the sort of oil based on the signals from the wireless liquid level meter 1 and data stored in an IC card as a memory, and when a different sort of oil is detected, it is annunciated and a block valve 6 is closed. In the case an overflow is predicted, an alarm 15 is activated and the block valve 6 is closed when the oil filling amount reaches a specified value.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mixed oil and an overflow preventing device for preventing mixed oil and overflow when unloading an oil storage tank of a gas station from a lorry.

[0002]

2. Description of the Related Art If an oil mixture occurs during unloading, the oil mixture in the oil storage tank must be pumped out and re-refined. In addition, overflow is dangerous, and overflow into the sewer is particularly dangerous.

[0003]

On the other hand, the control device mounted on the tank truck proposed by the present applicant in Japanese Patent Application Laid-Open No. 1-226592 needs to connect an office control device and an on-vehicle control device. Yes, it is inconvenient.

Further, a device has been proposed in which the liquid level measuring section of the oil storage tank and the control device in the office are wirelessly connected, but it is necessary to connect the control device and the on-vehicle control device.
It's inconvenient.

It is an object of the present invention to provide an oil mixture and an overflow prevention device which does not require wiring to the outside of the vehicle-mounted control device.

[0006]

According to the present invention, a wireless liquid level indicator for transmitting the oil tank number and liquid level, storage means for storing cargo data and gas station data, receiving means, and receiving means A liquid amount calculation means for calculating the liquid amount based on the signal from the liquid level gauge and the data stored in the storage means, an oil type correctness determination means for determining the correctness of the oil type, and an overflow for determining the overflow. It is provided with a judging means and an informing means which operates by the output of each of these means.

[0007] It is preferable that the storage means is composed of an IC card, and two cards for the cargo data and the gas station are set.
You can also make one.

Further, it is preferable that the vehicle-mounted control device can close the main valve of the lorry.

[0009]

In the oil mixture and overflow prevention device configured as described above, the on-vehicle control device is convenient because it does not need to be connected to an external liquid level gauge or in-office control device.

Further, the on-vehicle control device judges the oil type based on the signal from the wireless liquid level gauge and the data of the IC card which is the storage means, informs the case of different kinds and closes the main valve, and When an overflow is predicted in advance, the notifying means is operated, and when the predetermined amount of oil is reached, the notifying means is operated to notify and the main valve is closed.

[0011]

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

In FIG. 1, oil storage tanks T1 to T4 (only the oil storage tank T1 is shown in the drawing) are buried under the site A of the gas station. For example, the tank T1 contains regular gasoline and the tank T2 contains High-octane gasoline, light oil in the tank T3, and kerosene in the tank T4. For example, the tank T1 is provided with a wireless liquid level gauge 1, and a certain time (for example, 1
The tank number and liquid level are sent every 0 seconds. Further, the tank T1 is connected to an oil filler port 3 on the ground by an oil filler pipe 2. Further, the tanks T2 to T3 are also configured similarly to the tank T1.

On the other hand, the tank truck R has hatches H1 to H1.
H3 is provided, for example, hatch H1 is regular gasoline, hatch H2 is high-octane gasoline, and hatch H2 is
Light oil is loaded in 3 respectively.

The hatches H1 to H3 respectively include bottom valves V1 to V3, valve handles 4a to 4c for opening and closing the bottom valves V1 to V3, and a bottom valve V1 formed by the valve handles 4a to 4c.
Bottom valve open sensors 5a to 5c for detecting opening and closing of V3 to V3 are provided. Further, the outlet sides of the bottom valves V1 to V3 are connected to an oil supply hose 7 via a main valve 6 connected to an in-vehicle control device 10 as described later, and the tip of the oil supply hose 7 is
A coupling 8 is provided which is connected to the oil inlet 3. Then, in the driver's cab of the Lori R, the in-vehicle control device 1
0 is provided, and in the office B, a liquid level gauge control unit 30 is provided.

In FIG. 2, the on-vehicle control device 10 controls the bottom valve open sensors 5a-5c and the main valve 6 via the signal line 35.
It is connected to the. The control device 10 includes a cargo IC
The reader / writer 11 of the card C1 (FIG. 3), the reader / writer 12 of the gas station IC card C2 (FIG. 4), the ten-key pad 13, the display 14, the alarm 15, and the printer 1
6 is provided, and the antenna 17 is connected.

In FIG. 3, the cargo IC card C1 stores data such as a lorry number a, a gas station name b, a hatch number c, an oil type d, and an amount e, that is, cargo data as shown in FIG. A storage location for the unloaded mark f is provided.

In FIG. 4, in the IC card C2 for the gas station, the gas tank name b, the tank number c, the oil type d, the volume g, the liquid level meter frequency h, and the formula for calculating the liquid amount from the liquid level in each tank are shown. j or tank data is stored as shown, for example. Both IC cards C1 and C2 may be a single card.

Next, the control mode will be described mainly with reference to FIG. The operator of Lorry R loads the two IC cards C1 and C2 at the oil tank and sets them in the reader / writers 11 and 12 of the in-vehicle control device 10 at the gas tank. Then, from the reader / writer 12 to each tank T
The frequencies 1 to T4 are set in the reception means 23, and the liquid amount calculation means 24 receives the tank data, that is, the calculation formula j of each tank from the reader / writer 12, and the reception means 23.
Based on the tank number and the liquid level signal from, the liquid amounts of all the four underground tanks T1 to T4 are calculated, and the liquid amounts of the respective tanks are sent to the increased liquid amount judging means 25. After setting the IC card, the operator sets the coupling 8 to the first tank T1.
Of the bottom valve V1 by turning the valve handle 4a.
When the main valve 6 is opened and unloading is started, the liquid level rises, and the increased liquid amount determination means 25 increases the liquid amount in the first tank T1 among the liquid amounts sent from the liquid amount calculation means 24. It is determined that the reader / writer 12 and the liquid amount calculation means 2
A signal indicating that the first tank T1 is being lubricated is output to No. 4.

When the reader / writer 12 receives this signal,
Based on the data of the first tank stored in the C card C2, the oil type signal of regular gasoline is used as the oil type correctness determination means 22.
To the overflow judgment means 27 and the overflow prediction judgment means 26. Further, the liquid amount calculation means 24, which has received the signal that the first tank T1 is being lubricated, sends the current liquid amount in the tank T1 to the overflow prediction determination means 26 and the overflow determination means 27 every second.

By turning the other valve handle 4a, the signal from the bottom valve open sensor 5a is transmitted to the valve open hatch determination means 21, and the signal from the means 21 to open the bottom valve V1 of the hatch H1 is sent to the reader / writer 11. Output to. Receiving this signal, the reader / writer 11 outputs a regular gasoline oil type signal to the oil type correctness determination means 22 based on the data of the hatch H1 stored in the IC card C1, and outputs a 2KL capacity signal to the overflow prediction determination means. To 26. The oil type correctness determination means 22 includes the oil type of the hatch H1 from the reader / writer 11 and the first tank T from the reader / writer 12.
The oil type of No. 1 is compared to determine whether the oil type is correct. That is, in this case, it is determined that both are regular gasoline and the type of oil is correct. If the oil type is not correct, the main valve 6 is closed and the alarm 15 is operated to notify the operator. In addition, the overflow prediction determination means 26 determines the current liquid amount of the first tank T1 from the liquid amount calculation means 24 and the leader
Based on the capacity of the No. 1 tank from the writer 12 and the amount of lubricating oil from the hatch H1 from the reader / writer 11, whether the amount of lubricating oil is large in the space of the No. 1 tank T1, that is, whether overflow is predicted or not To judge. Then, when it is determined that the overflow is predicted, the alarm 15 is activated to notify the operator. Further, the overflow determination circuit 27 closes the main valve 6 when the liquid amount immediately before the overflow is reached based on the capacity of the first tank T1 from the reader / writer 12 and the liquid amount from the liquid amount calculation means 24. , The alarm 15 is activated to notify the operator.

[0021]

Since the present invention is constructed as described above, it is possible to reliably prevent oil mixture and overflow.

Further, it is very convenient because no connection between the on-vehicle control device and the outside is required.

[Brief description of drawings]

FIG. 1 is a side view of a tank truck and a gas station showing an embodiment of the present invention.

FIG. 2 is a front view showing an in-vehicle control device.

FIG. 3 is a format diagram of a cargo IC card.

FIG. 4 is a format diagram of an IC card for a gas station.

FIG. 5 is a control block diagram.

[Explanation of symbols]

 A ... Gas station B ... Office C1 ... Cargo IC card C2 ... Gas station IC card H1 to H3 ... Hatch R ... Tank truck T1 to T4 ... Oil storage tank V1 V3 ... Bottom valve 1 ... Wireless liquid level gauge 2 ... Lubrication pipe 3 ... Lubrication port 4a-4c ... Valve handle 5a-5c ... Bottom valve open sensor 6 ... Original Valve 7 ... Lubrication hose 8 ... Coupling 10 ... In-vehicle control device 11 ... Reader / writer 12 ... Reader / writer 13 ... Numeric keypad 14 ... Indicator 15 ... Notification Container 16 ... Printer 17 ... Antenna 20 ... Control unit 21 ... Valve open hatch determination means 22 ... Oil type correctness determination means 23 ... Reception means 24 ... Liquid amount determination means 25・ ・ ・ Increased liquid amount judgment means 26 ・ ・ ・ Overflow prediction judgment hand 27 ... overflow determining means 30 ... liquid level indicator control unit 35 ... signal line

Claims (1)

[Claims] 1. A wireless liquid level gauge for transmitting the number and liquid level of an oil storage tank, a storage means for storing cargo data and a gas station data, a receiving means, and a received signal and memory from the liquid level gauge. The liquid amount calculation means for calculating the liquid amount based on the data stored in the means, the oil type correctness determination means for determining the correctness of the oil type, the overflow determination means for determining the overflow, and the output of each of these means. An in-vehicle control device having an informing means that operates, and an oil mixture and overflow prevention device.