JP3036736B2 - Shipping method to tank lorry - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method of filling a tank lorry with a liquid product produced or a liquid such as generated waste liquid from a plurality of shipping gates. The present invention relates to a method of shipping to a tank lorry that can be efficiently shipped or paid out to a tank lorry.

[0002]

2. Description of the Related Art Generally, in a factory having a plurality of shipping gates, as shown in FIG.
1, 22, 23 and pumps 31, 3 for dispensing this product
2, 33, 34 and dispensing valves 41, 42, 43, 44, 4
5, shipping gates 11, 12, 13, 14,
15 and a plurality of tank trucks 51, 52, 53, 54
To pay out the products to In such a factory, the tank lorries are concentrated on a specific tank, and the variation in the remaining amount of the tank becomes large. If a small number of tanks or a tank with an extremely large allowance for dispensing occur, the supply of the product from these tanks to the use destination of the factory is hindered, and the filling of the tank with the product is hindered. Therefore, the tank is uniquely determined in advance for each tank lorry so that there is no variation in the discharge allowance of the tank. Since then, products have been shipped by a method of operating a pump and a discharge valve. In addition, the tank lorry stops at the reception desk when entering and leaving the vehicle, and uses a method of notifying the tank lorry of the availability of the shipping gate at this reception desk.

[0003]

However, as in the prior art, the tank for each tank truck is determined,
Alternatively, in order to determine in advance which tank to go to, tank lorries concentrate on a specific tank depending on the time of day, causing a waiting time for shipping, or a loss like products in the tank. There was a problem that it occurred.

In addition, when liquefied gas or the like is dispensed, it takes time to prepare the operation of the pump (in the case of a suction type pump, it takes about 5 minutes to introduce a liquid and bleed air before operation,
For pumps of liquid oxygen, liquid nitrogen, liquefied natural gas, etc.
(Because it takes about 30 minutes to pre-cool from normal temperature to liquid temperature (about -190 ° C) before operation), when the pump is operated after the tank lorry arrives at the shipping gate, a waiting time until the start of dispensing occurs, In the case of arranging more tank trucks one after another, there is also a problem that the time from completion of shipment until returning to the reception desk is wasted time.

[0005] In order to solve such a problem, it is conceivable to determine the shipping gate by contacting the shipping gate and the reception office by telephone after the tank lorry enters, but in this case, the shipping gate is required. It is unrealistic with a large staff.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and is intended to efficiently remove liquids such as products and waste liquids.
It is an object to make it possible to ship or pay out to a tank lorry.

[0007]

SUMMARY OF THE INVENTION The present invention relates to a tank lorry in a facility having a plurality of tanks for storing a liquid, a pump for filling the tank lorry with the liquid, and a plurality of shipping gates comprising a liquid discharging valve. A dispatching device that determines which shipping gate to dispatch to based on the spare amount of payout of each tank (= current stock amount of the tank−the lower limit amount that cannot be physically dispensed from the tank), the operation signal of the pump, and the open signal of the discharge valve. By the dispatching device, among the shipping gates whose pumps are not operated and the dispensing valve is not opened, the dispatching gates are preferentially dispatched in the order of the shipping gate connected to the tank having a larger allowance for dispensing, For a shipping gate that is closed again after a predetermined time since the pump is operated and the dispensing valve is once opened, even if the preceding tank lorry has already been dispatched. It recognizes the gate can, so as to allow the dispatch of the next tank truck is obtained by achieving the above objects.

In the case of a liquid which takes a long time to prepare for operation of the pump such as a liquefied gas, the preparation for operation of the pump at the corresponding shipping gate is started simultaneously with the instruction to dispatch the vehicle to the tank lorry.

In the present invention, vehicles are preferentially dispatched in the order of the shipping gate connected to the tank having a larger allowance among the shipping gates in which the pump is not operated and the dispensing valve is not opened. Therefore, it is not necessary to uniquely determine the destination of the tank truck in advance.

Further, according to this method, even if the preceding tank lorry is a delivery gate which has already been dispatched, the delivery gate is closed again after a predetermined time after the pump is operated and the discharge valve is once opened. Recognizes an empty gate and allows the next tank truck to be dispatched, so that a large number of tank trucks can be dispatched efficiently.

In particular, in the case of a liquid such as a liquefied gas which takes a long time to prepare for operation of the pump, it is possible to reduce the dead time by starting the operation of the pump at the corresponding shipping gate at the same time as the instruction to dispatch the tank truck. Can be.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to an embodiment in which the present invention is applied to a factory as shown in FIG.

In this embodiment, as shown in FIG. 2, in a factory having the equipment configuration as shown in FIG. 1, a weighing machine 60 at an in-ground station for weighing empty or full tank trucks is integrated. , A vehicle dispatching device 70 also serving as a reception desk is provided.

The dispatching device 70 includes a device main body 72 such as a personal computer, a cathode ray tube (CRT) 74 having a touch panel for displaying and inputting information, a card reader 76 for reading a card 77, and a tank truck. Printer 78 that prints a slip 79 (see FIG. 3), and a hard disk driver (HD) that stores information.
D) 80, an upper process computer (hereinafter referred to as an upper process computer) via a modem 82, a communication line 84, a gateway (G / W) 86, an IP router 88 which is a connection point to a network, and a network 90.
92 and the like.

As shown in FIG. 3, the dispatching device 70, the host computer 92, and the terminal 94 thereof are connected to the dispatching device 70, respectively.
A, 70B, host computer 92A, 92B, terminal 94
A and 94B are duplicated, and the pump operation device 96 obtains the discharge allowance in the tank, the operation signal of the pump, and the opening of the discharge valve for each shipping gate via the network 90. In FIG. 3, 98
Is a switch for switching between the two vehicle allocation devices 70A and 70B. Note that, in FIG. 3, the dispatching device, the host computer, and the terminal are each duplicated, but it is not always necessary to duplicate it for implementing the present invention.

Next, a vehicle allocation procedure according to the embodiment of the present invention will be described with reference to FIG. First, step 110
Then, it is determined whether or not payout is possible for each tank. Specifically, it is determined whether or not all of the following three conditions are satisfied for each of the tanks 21, 22, and 23.

Either the payout allowance is greater than zero, or the inventory security lower limit has been lifted. The liquid level exceeds the physical lower limit of the equipment. There is room at the shipping gate.

Whether or not the shipping gate is empty is determined by whether or not any one of the following conditions is satisfied.

I) The tank roll has not been dispatched yet. ii) The vehicle has been dispatched, but once the dispensing valve opens and then closes,
Currently, the withdrawal valve is not open.

After the end of step 110, the process proceeds to step 112, where it is determined whether or not there is a tank that can be dispensed. If the judgment result is positive and there is a payable tank,
Proceeding to step 114, the payout allowances of the payable tanks are compared, and in step 116, the tank having the larger payout allowance is determined. If the payout allowances are the same, a specific tank, for example, the tank 21 can be preferentially selected.

If the tank 21 with a large allowance for dispensing is the tank 21, the routine proceeds to step 118, where a tank truck is allocated to the tank 21. Then step 12
At 0, a vacant gate among the shipping gates connected to the tank 21 is determined. If the vacant gate is the shipping gate 11, a tank truck is allocated to the shipping gate 11 at step 122. On the other hand, if the empty gate is the shipping gate 12, a tank truck is allocated to the shipping gate 12 in step 124.

On the other hand, if it is determined in the aforementioned step 116 that the payout margin of the tank 22 is large, the routine proceeds to step 130, where a tank truck is allocated to the tank 22. In this case, since there are only 13 shipping gates, a tank truck is allocated to the shipping gate 13 in step 132.

If it is determined in step 116 that the tank having a large payout amount is the tank 23,
Proceeding to step 140, a tank truck is allocated to the tank 23. Next, in step 142, an empty gate is determined. If the empty gate is the shipping gate 14, a tank truck is allocated to the shipping gate 14 in step 144. On the other hand, if the empty gate is the shipping gate 15, the process proceeds to step 146, and a tank truck is allocated to the shipping gate 15.

On the other hand, if it is determined in step 112 that there is no tank that can be dispensed, the process proceeds to step 150 to notify that dispensing is impossible.

In this way, it is first determined whether or not payout is possible for each tank, and a tank lorry is allocated to a vacant gate of a tank having a large allowance for payout for a tank that can be paid out. A gate to which a tank lorry is allocated by this method is regarded as full, and the next tank lorry is not allocated.However, at that gate, a gate that once closes after the dispensing valve is opened and the shipment is completed is an empty gate. Therefore, the next tank truck is dispatched, so that a favorable result that the tank trucks are dispatched in the following order can be obtained.

1. The first tank truck 51 → (the tank has the largest spare capacity, allocated to the empty gate 11) 2. The second tank truck 52 → (the tank has the largest spare capacity, empty 3. Delivered to gate 12) 3. Third tank lorry 53 → (second largest tank allowance, distributed to empty gate 14) 4. Fourth tank lorry 54 → (already dispatched to gate but paid out) Is completed and the dispensing valve is once opened and then closed, so the vehicle is allocated to the full gate 11 where the first tank truck 51 is located.)

In the above embodiment, the present invention
Although the present invention has been applied to factories that ship liquid products, the present invention is not limited to this, and it is apparent that the present invention can be similarly applied to facilities other than factories for discharging waste liquid and the like.

[0028]

As described above, according to the present invention,
There is no need to uniquely determine the destination of the tank lorry in advance, and a large number of tank lorries can be efficiently allocated, and labor for guiding the tank lorry is eliminated.

In particular, when the operation preparation of the pump is started at the same time when the shipping gate is set, not only can the pump be operated efficiently, but also labor for shipping is almost unnecessary.

[Brief description of the drawings]

FIG. 1 is a pipeline diagram showing a configuration example of a factory having a plurality of shipping gates.

FIG. 2 is a block diagram showing a configuration of a vehicle allocation device for implementing the present invention.

FIG. 3 is a diagram showing the overall network configuration.

FIG. 4 is a flowchart showing an example of a processing procedure of the vehicle allocation device.

[Explanation of symbols]

 11-15: Shipping gate 21-23: Tank 31-34: Pump 41-45: Discharge valve 51-54: Tank lorry 60: Weighing machine 70: Distributing device 90: Network 92: Host process computer 94: Terminal 96: Pump operation apparatus

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-170296 (JP, A) JP-A-4-6088 (JP, A) JP-A-1-303589 (JP, A) 699 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B67D 5/00-5/04 G06F 17/00-17/60

Claims (2)

(57) [Claims] In a facility having a tank for storing a liquid, a pump for filling the liquid into the tank lorry, and a shipping gate comprising a liquid discharging valve, it is determined which shipping gate the tank lorry is to be dispatched to. A dispatching device for judging from a spare amount of each tank, an operation signal of a pump, and an opening signal of a dispensing valve, wherein the dispensing device does not operate the pump and does not open the dispensing valve. Of the shipping gates that are allocated preferentially in the order of the shipping gate connected to the tank with the larger allowance for dispensing, and that are closed again a predetermined time after the pump is operated and the dispensing valve is once opened Means that even if the preceding tank lorry has already been dispatched, it recognizes it as an empty gate and allows the next tank lorry to be dispatched. . 2. The method for shipping to a tank lorry according to claim 1, wherein, at the same time as the instruction to dispatch the vehicle to the tank lorry, the operation preparation of the pump at the corresponding shipping gate is started.