JP2587082B2 - Oil mixture prevention device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for preventing oil mixture when unloading gasoline, light oil, etc., from an oil storage tank of a tank lorry filling station.

[Prior Art] At this time, if the oil type in the hatch of the tank lorry does not match the oil type in the specific oil tank, oil mixture occurs. Conventionally, to prevent this, a key has been provided in each of the lubrication port and the hatch of the tank, and when the keys match, the lubrication port can be connected to the lubrication hose of the tank lorry, and the bottom valve of the hatch can be opened.

In such a conventional method, since each lubrication port is provided with a separate key, it is troublesome to store and manage the keys, and it is troublesome to search for a specific key among a plurality of keys and time-consuming. is there. Japanese Patent Application Laid-Open No. Sho 62-193998 discloses a technique for judging a difference in light transmittance depending on an oil type to prevent oil mixture. However, such a known technique requires a light-emitting device, and wiring for the light-emitting device requires means for preventing fire by electricity, which complicates the device.

Further, Japanese Patent Application Laid-Open No. 62-16391 discloses a technique for activating an alarm when oil types do not match. However, such a known technique opens and closes a fuel filler with a key, and has the above-mentioned disadvantages.

[Problems to be Solved by the Invention] Accordingly, an object of the present invention is to provide an oil mixture prevention device that can reliably prevent oil mixture with a simple device without using a key.

[Means for Solving the Problems] According to the present invention, in the oil mixing prevention device for preventing oil mixing when the tank lorry unloads oil to the oil storage tank of the gas station, the bottom valve of each hatch of the tank lorry has A bottom valve sensor for detecting opening and closing is provided, and a first coupling is provided at a tip of an outflow pipe connected to each hatch via the bottom valve, and a first coupling is provided adjacent to the first coupling. A fourth coupling is provided at the tip of the lubrication pipe of the oil storage tank, and an oil type identification unit is provided adjacent to the fourth coupling. Second and third couplings are respectively provided at both ends of the lubricating hose connecting the oil pipe, and second and third connectors are respectively provided adjacent to the second and third couplings, Their second And a signal line connecting the third connector to the lubrication hose, and connecting the second coupling of the lubrication hose to the first coupling of the outflow pipe to unload the third coupling to the lubrication pipe during unloading. The controller is configured such that the connector is connected at the same time as being connected to the fourth coupling, and the control device to which signals from the oil type determination means and the bottom valve sensor are input stores the oil type for each hatch. Data storage means, and oil type determination means for comparing the oil type signal from the oil type identification unit with the oil type stored in the load data storage means, and wherein the oil type determination means An alarm is provided that is activated when a mismatch is determined.

[Explanation of Operation and Effect] Therefore, the second coupling of the lubrication hose is connected to the first coupling of the outflow pipe, and the third coupling is connected to the fourth coupling of the lubrication pipe. Then, the first connector and the second connector are connected, and the third connector is connected to the oil type identification unit. As a result, the oil type signal is sent to the control device via the signal line. Then, when the bottom valve is opened, the bottom valve sensor outputs a hatch number signal. The control device selects the oil type of the hatch from the hatch number signal and the load data stored in the load data storage means, and the oil type determination means determines the oil type signal indicated by the oil type identification unit. When the oil types match, the oil type is kept as it is, and when they do not match, the alarm is activated.

As described above, in the present invention, the oil type signal is output only by connecting the lubrication hose to the tank lorry and the lubrication port, and the oil type can be determined by comparing the signal with the signal from the bottom valve sensor of the hatch. No work required. Therefore, the refueling efficiency is improved.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, oil storage tanks T1 to T3 (hereinafter referred to as a symbol T will be buried) are buried on a site A of a gas station, and lubrication pipes 1a to 1c (hereinafter referred to as a symbol 1 will be used as a general term). Is communicated to. For example, the tank T1 stores high-octane gasoline, the tank T2 stores regular gasoline, and the tank T3 stores light oil.

Couplings 2a to 2c (hereinafter, collectively referred to as reference numeral 2) are provided at the tip of the lubrication pipe 1, and the couplings 2 are provided with oil type identification portions 3a to 3c, respectively (hereinafter referred to as reference numerals). 3 is used). On the other hand, the tank lorry R has a hatch H1 or
H3 (hereinafter, the symbol H is used when collectively referred to) is provided,
For example, hatch H1 is loaded with high-octane gasoline, hatch H2 is loaded with regular gasoline, and hatch H3 is loaded with light oil. These hatches H have bottom valves 4a to 4c, respectively.
And bottom valve sensors 5a to 5c for detecting opening and closing of the bottom valve (hereinafter, the reference numeral 5 is used when collectively referred to). The outlet sides of the bottom valves 4a to 4c are connected to an outflow pipe 6, and an end of the outflow pipe 6 is connected to a lubrication hose indicated by reference numeral 10 as a whole.

Further, a control device 20 is provided in the cab of the lorry R, and the control device 20 stores the load data, that is, the oil type of each hatch H. An alarm 24 is provided on the roof.

In FIG. 2, a resistance r is provided inside the oil type identification section 3, and the resistance r is connected to the connector section 3A. The resistance r is, for example, 1 KΩ, 2 KΩ and 3 KΩ for the couplings 2 a, 2 b and 2 c, respectively.
T2 and T3 oil types, namely high-octane gasoline, regular gasoline and light oil are indicated.

A coupling 7 is provided at an end of the outflow pipe 6, and the coupling 7 is provided with a connector 8 connected to a control device 20 by a signal cable 9.

The lubricating hose 10 includes a coupling 11 and a coupling 12 that engage with the coupling 2 and the coupling 7, respectively.
And holders 15 and 16 that are fixed to the couplings 11 and 12 are provided. Each of the holders 15 and 16 has a bulge 15
a, 16a are formed, and when these couplings are connected to the couplings 2 and 11, 12 and 7,
Connectors 17 and 18 are provided for engaging 3A and 8 respectively. Then, two signal lines 19a and 19b, which reinforce the hose 10 by winding it in a spiral shape, are embedded, and both ends of the signal lines are connected to connectors 17 and 18, respectively.

In FIG. 3, a control device 20 is constituted by a microcomputer, and has a storage means 21 for storing cargo data, that is, an oil type for each hatch, a valve opening signal of the bottom valve sensor 5, and oil from the liquid type identification unit 3. An oil type determining means 22 is provided for comparing the seed signal with the cargo data stored in the storage means 21 to determine whether or not the oil types match, and for activating the alarm 24 when the oil types do not match.

Accordingly, when the coupling 12 is connected to the coupling 7 during lubrication, the connector 18 is connected to the connector 8,
When the coupling 11 is connected to the coupling 2a in the example of FIG. 1, the connector 17 is connected to the oil type identification unit 3a, and the oil type signal of the 1 kΩ resistance r of the oil type identification unit 3a is sent to the signal lines 19a and 19b and the signal. It is sent to the control device 20 via the cable 9. When the bottom valve 4a is opened, the bottom valve sensor 5a outputs the number signal of the hatch H1. The oil type determination means 12 of the control device 20 selects the oil type of the hatch from the hatch number signal from the bottom valve sensor 5a and the cargo data stored in the storage means 21, and selects the oil type indicated by the oil type identification unit 3a. Compare with the seed signal, and if the oil type matches (in the case shown, match), leave it as it is,
If they do not match (for example, when the bottom valve 4b is opened)
An operation signal is output to activate the alarm 24 to notify the operator, thereby preventing oil mixture.

[Effects of the Invention] As described above, according to the present invention, the following excellent effects can be obtained.

(I) By connecting the coupling of the lubrication hose, the main oil of the lubrication port can be known, and by opening the bottom valve, the oil type of the hatch of the tank lorry can be known.

(Ii) Refueling efficiency is improved because no special work is required to determine the oil type.

(Iii) All that is necessary is to provide a signal line on the lubricating hose.

[Brief description of the drawings]

FIG. 1 is a side view showing a tank lorry equipped with an oil mixture prevention device embodying the present invention and a gas station, FIG. 2 is a side sectional view showing an oil supply hose, and FIG. 3 is a control block diagram of a control device. 2 ... coupling, 3 ... oil type identification section, 5 ... bottom valve sensor, 8, 17, 18 ... connector, 10 ... lubrication hose, 11
…… Coupling, 19a, 19b …… Signal line, 20 …… Control device

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takashi Suzuki 2-12-13 Shibaura, Minato-ku, Tokyo Tokyo Tatsuno Co., Ltd. (72) Inventor Hisaya Kuroda 2-12-13 Shibaura, Minato-ku, Tokyo Stock Company Tokyo Tatsuno (56) References JP-A-62-193998 (JP, A) JP-A-62-16391 (JP, A) JP-A-59-93699 (JP, A)

Claims (1)

(57) [Claims] An oil-mixing prevention device for preventing oil mixture when a tank lorry unloads oil to an oil storage tank at a gas filling station. A bottom valve sensor for detecting opening and closing is provided at a bottom valve of each hatch of the tank lorry. A first coupling is provided at the end of the outflow pipe that is provided and connected to each hatch via its bottom valve, and a first connector is provided adjacent to the first coupling; A fourth coupling is provided at the tip of the lubrication pipe of the oil storage tank, an oil type identification unit is provided adjacent to the fourth coupling, and a lubrication hose for connecting the outflow pipe and the lubrication pipe is provided. Second and third couplings are provided at both ends, respectively.
Second and third connectors are provided in communication with the first and third couplings, respectively, and the second and third connectors are provided.
The signal line connecting the connector of
At the time of unloading, the second coupling of the lubrication hose is connected to the first coupling of the outflow pipe, and the third coupling is connected to the fourth coupling of the lubrication pipe so that the connector is connected at the same time. The control device configured to receive signals from the oil type determination means and the bottom valve sensor includes a load data storage means storing an oil type for each hatch, an oil type signal from the set type identification unit and a load. Oil type determining means for comparing with the oil type stored in the data storage means,
An oil-mixing prevention device comprising an alarm that is activated when the type of oil is determined but the type of oil does not match.