JPS62208397A - Lubricating device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a liquid supply device for supplying gasoline, light oil, etc. to a lorry.

``Prior Art'' As is well known, in oil depots that supply gasoline, diesel oil, etc. to lorries, a predetermined amount of liquid is supplied to each hatch in accordance with the capacity of the hatch of the lorry. However, if there is liquid remaining in the hatch, or if more than a predetermined amount of liquid is supplied due to an incorrect operation, the liquid will overflow, so a liquid level sensor is installed on the loading arm, and when the hatch is full, the main valve is set to be automatically counted.

Generally, when supplying liquid to a lorry, the amount of liquid supplied per unit time is reduced at the beginning of the liquid supply to prevent the generation of static electricity, and then the amount of liquid supplied per unit time is increased to reduce the amount of liquid supplied per unit time. When the liquid is near the specified liquid supply interval,
It is preferable to accurately supply a predetermined amount of liquid by reducing the amount of liquid supplied per unit time. To this end, according to the prior art, a flow meter is provided in the middle of the flow path, and the control valve is automatically operated based on the output and set amount of the flow meter.
I was ill.

However, when supplying liquid at a large flow port, such as when supplying liquid at an oil depot, the 1ffi meter becomes a large resistance, and the life of the flowmeter is short. Furthermore, controlling the control valve based on the set amount has the disadvantage that if there is residual liquid in the hatch, the liquid may overflow.

[Object of the Invention] Therefore, an object of the present invention is to provide a liquid supply device that can control the liquid supply 1 according to the amount of liquid in the hatch of a lorry.

[Structure of the Invention] According to the present invention, a liquid level sensor is provided in each hatch of the lorry, and a control device is provided for controlling the amount of liquid supplied based on the output of the liquid level sensor.

[Operations and Effects of the Invention] Therefore, since the liquid level in each hatch of the lorry can always be controlled by the amount of liquid m supplied per unit time by the signal from the liquid level sensor, the liquid supply amount II is controlled by reducing the flow and reducing static electricity. To prevent this from occurring, and to reduce the flow rate near the ``'d14 tongue'',
Water hammer can be prevented from occurring. In addition, even if there is residual liquid in the hatch, the hatch does not have to be filled with liquid, and appropriate liquid supply work can be performed.

[Example 1 The present invention will be described in detail below with reference to the drawings.

FIG. 1 is a plan view showing an oil depot in which the present invention is implemented, and an office 0 is provided near entrance G of the oil depot A.
An appropriate number of liquid supply devices 2a, 2b,
... is provided. Liquid supply device 2a J7 and 2b
are substantially the same, and each side thereof is a liquid supply area Aa1Ab. Therefore, the liquid supply device 2a
will be explained only, and the explanation regarding the liquid supply amount 'fi2b will be omitted. The liquid supply device ffi 2 a includes a rack 4,
On the rack 4, loading arms 5a to 5d/fi are provided according to each type of liquid, for example, the loading arm 5a is for regular gasoline, the loading arm 5b is for high-octane gasoline, the loading arm 5C is for diesel oil, and the loading arm 5d shall be supplied with kerosene, respectively. Hatch sensors 6a to 6d are attached to each of these loading arms, and indicators 7a to 7d for displaying the liquid supplied from the loading arms 5a to 5d, respectively, are provided at easily visible positions. Furthermore, the rack 4 is provided with a liquid supply control device 8 .

The shipping control device 9 installed in the office O and the liquid supply control device 8 installed in the rack 4 are connected to each other by a signal line L1 to enable serial transmission.

The hatch sensors 6a to 6d each detect the hatch number of the lorry and the loading arms 5a to 5d on which the hatch number and the hatch sensor are attached.
It emits a signal according to the liquid type number.

FIG. 2 shows a liquid supply device 2a embodying the present invention, in which a portion of the liquid supply device 2a is shown supplying liquid to the lorry R.

In the drawing, hatch H2 is being supplied with liquid.

A liquid supply control device 8 is installed upright on the rack 4, and the liquid supply control device 8 is provided with a card reader 21, necessary operation buttons 22, and an alarm 8a.

A liquid supply pipe 25 to which liquid is sent from a liquid supply pump (not shown) is connected to the loading arm 5a via a control valve 27 having a valve drive section 27a. As shown in FIG. 1, a plurality of liquid supply systems (for example, four systems) are provided for one rack 4.

In the figure, reference numeral 29 indicates a starting switch, and a location where the hatch sensor 11b of the hatch H2 of the lorry R is connected to the hatch sensor 6a is shown. Each hatch H1, H2 of Loli R
, 13 have liquid level sensors 26a, 26b, 26, respectively.
(1 is IGt+'31'LT, and these liquid level sensors are preferably of a capacitive type, for example. Hatch sensor 6
A is connected to the liquid level sensor 26 via the hatched sensor 11b.
A signal indicating the liquid level and the hatch number detected by the hatch sensor is given by b, and this liquid level signal is displayed as the liquid supply amount in the display it 7 a. 5 in the diagram
1 is a ground terminal, and 51a is a ground cable.

Next, the operation will be explained with reference to FIGS. 3 to 5.

At Office O, the liquid supply data such as the type of oil and the amount of liquid to be supplied to each hatch of Roly R is stored in advance in the shipping control device 9.
Enter the information on the keyboard 3o, and give the driver a unique card. The shipping control device 9 includes the keyboard 3
In addition to 0, it has a card reader 31, a printer 32, a CRTa 2 for display, and a floppy 34 as an external memory.

The lorry R enters from entrance G, reads the driver's card into the card reader 31 of the shipping "aI + control device 9 of the office 0" (step 511), outputs the liquid supply data to the printer 32, and issues a slip. , and is displayed on the display device (CRT) 33 (step 512).

The driver takes the slip and indicates the amount of liquid to be supplied f! ? Move Loli R toward 2a.

When the amount of liquid supplied is "i?ff2a", the driver connects the ground terminal 51.
Connect the ground cable 51a to the card reader 21.
When the card is read (step 521), a car number signal is sent to the shipping control device 9 via the signal line L1 (step 522). Once the card data is entered (step 5)
13), the shipping control device 9 transmits the previously input liquid supply data to the liquid supply control device 8 (step 514). The liquid supply control device 8 receives liquid supply data via the signal line L1 (step 523) and stores the data (step 524). The driver inserts the loading arm into the hatch 10b by looking at the slip, and connects the hatch sensor 6a to the hatch target (J-11b).
is read (step 525). It is compared with stored liquid supply data to determine whether the type of liquid to be supplied to the hatch is correct (step 826).

If the liquid type is correct, press the start switch 29 (step 521). Then, a signal from the liquid supply control device 8 is applied to the valve drive unit 27a, the control valve 27 is first half-opened (step 328), and liquid supply is started. Hatsuchi H2
For example, the liquid level signal from the liquid level sensor 26b in the
When the limit is exceeded (step 529), the control valve 27
is fully opened (step 330). For example, the liquid volume in hatch H2 is 200 from the liquid volume setting ω of the liquid supply data.
Step 531)
, the l1tall valve 27 is left half open (step 5).
32).

When the amount of liquid in hatch H2 reaches the set amount (step 5
33), the control valve 27 is 111 (step 534)
. Therefore, the control valve 27 is controlled to open and close as shown in FIG. 4, and the instantaneous discharge amount can be controlled, and step 82G
If the type of liquid is different, check the liquid supply control device! 8
sends a signal to the notification Z8a, and is notified to that effect (step 535).

When the liquid has been supplied to each hatch in this manner and the liquid has been supplied to all hatches H1 to H3 (step 836), the liquid supply control device 8 sends a liquid supply end signal to the shipping control device 9 (step 531). , the operation of the liquid supply control device 8 is completed. If the shipping control device 9 receives the liquid supply end signal from the liquid supply control device 8 (step 815), the shipping control device 9 stores the contents of the liquid supply data in the floppy disk 34, which is an external memory (step 816), and starts the liquid supply. The work is finished.

When the fluid supply work is completed, the driver disconnects the ground and leaves the vehicle.

FIG. 6 shows the flow for preventing liquid wetting by the liquid supply control device 8. When the control valve 27 is opened (step 541), a signal from the liquid level sensor indicates that the tank is full. It is always judged whether or not the tank is full (step 342), and if it is not full, it is judged whether the control valve 27 is open (step 343), and if it is full, aI11
111 valve 27 is closed (step 844), and the operation ends. Furthermore, if the control valve 27 becomes intrusive due to the operation shown in FIG. 5 (step 343), the operation ends as well.

[Summary] As described above, the present invention adjusts the amount of liquid supplied according to the output of the liquid level sensor provided in the hatch.
Liquid can be supplied at a slow speed at the start of liquid supply to prevent the generation of static electricity, and liquid can be supplied at a slow speed at the end of liquid supply to perform accurate liquid supply and prevent water hammer. Further, according to the present invention, the residual liquid 1 in the hatch can be properly grasped and the liquid can be appropriately supplied. Furthermore, since the present invention can determine the type of liquid corresponding to the hatch number at the same time as receiving the output of the liquid level sensor, it is possible to prevent mixed liquids from occurring.

[Brief explanation of drawings]

Fig. 1 is a plan view of an oil refinery embodying the present invention, Fig. 2 is a side view of a liquid supply volume A position embodying the present invention, and Fig. 3 is a block diagram of a control device (computer) embodying the present invention. Figure, 4th
The figure is an explanatory diagram showing the opening degree of the control valve, Figure 5 is a diagram showing a flowchart of the shipping control device and liquid supply control device, and Figure 6
The figure is a diagram showing a flowchart of opening/closing control of the control valve. 2a, 2b...Liquid supply device 8...Liquid supply i, II equipment d 9...Shipping i, IJ l device? 7 26a
, 26b, 26G...Liquid level sensor Δ...Oil depot R...Lori 81. 112
, 13... Hatch Figure 1 Figure 2

Claims (1)

[Claims] A liquid supply device characterized in that a liquid level sensor is provided in each hatch of a lorry, and a control device is provided for controlling the amount of liquid supplied based on the output of the liquid level sensor.