JPH11167652A - Tank schedule creation supporting device and program recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tank schedule creation supporting device which supports schedule of production at the time of lifting crude oil in a very large crude carrier(VLCC) (tanker) to tanks, etc., and is also easily realized. SOLUTION: This tank schedule creation supporting device which decides the distribution quantity of each crude oil to every tank at the time of distributing plural kinds of crude oil in a VLCC to plural tanks successively specifies a pair of calculation object crude oil and a calculation object tank (S502 and 503) and performs virtual crude oil shift (S507) as much as quantity (S505) that is decided by the American Petrolium Institute(API) degree (function of a specific gravity) of the calculation object crude oil and the calculation object tank between the pair. When constraint conditions that are not met remain (S512; N) in a state where virtual crude oil can not be performed (S510; Y), it performs virtual crude oil shift again from the beginning in a state (S514) the virtual crude oil shift is inhibited between the pair which correspond to the conditions.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tank schedule creation support device and a program recording medium, for example, petroleum (crude oil, petroleum products,
A schedule for unloading semi-finished products and ultralight crude oil) to multiple tanks in a refinery, a schedule for shifting petroleum in tanks to other tanks, and an atmospheric distillation unit (topper) for crude oil in tanks Schedule creation support device that assists in creating a schedule when oil is supplied to a supply target device such as a tanker and a tanker, and a program recording medium on which a program for operating a computer as such a tank schedule creation support device is recorded. .

[0002]

2. Description of the Related Art In a refinery, a plurality of crude oil tanks (hereinafter, referred to as "oil tanks") are provided.
Is simply referred to as a tank).
Various crude oils carried by C (so-called tankers) are once fried into their tanks. Then, the production (distillation) of various products is performed by sequentially passing the crude oil in one tank or a mixture of crude oils in two or more tanks through an atmospheric distillation apparatus (topper).

[0003] The proportion of products produced by such a procedure is determined by the properties of the crude oil (mainly the API degree (a function of specific gravity)). For this reason, when unloading the crude oil from the VLCC to the tanks so that the crude oil having the desired properties can be supplied to the topper, the crude oil in each tank has the desired properties. The amount (distribution) of each crude oil to be distributed to each tank is determined in consideration of the properties of each crude oil carried (conveyed) by the VLCC, the stock amount of each tank, and the like. Similarly, some combinations of tanks (including one tank) to be used are determined in consideration of the properties and stock quantity of crude oil in each tank at that time, and the determined combinations are determined. Are sequentially used to supply crude oil to the topper and manufacture products. Prior to the supply of crude oil to the topper, the crude oil is blended by shifting the crude oil between the tanks, and the properties of the crude oil in the tank used as the supply source of the crude oil to the topper are sometimes adjusted. ing.

[0004]

As described above, in a refinery, a method of distributing crude oil in a VLCC to tanks, a method of shifting crude oil between tanks, It is necessary to determine the supply procedure of the crude oil to the topper. Conventionally, this operation (tank scheduling) has been performed by a skilled person in consideration of various restrictions existing in the refinery.

It has been reported that tank scheduling is performed using a so-called linear programming method (for example, 1989 Annual Conference of the Japanese Society for Artificial Intelligence (3rd) Proceedings: p.645-648, 1990). Annual Meeting of the Japanese Society for Artificial Intelligence (4th
Times) Proceedings: p.555-558). However, in tank scheduling, the contents of constraints imposed on the schedule often change from time to time, and it is difficult to set an objective function. Therefore, a method using linear programming may actually occur in a refinery. It was difficult to deal with various cases.

Accordingly, a first object of the present invention is to provide a VLCC.
It is an object of the present invention to provide a tank schedule creation support device which can support creation of a schedule used for lifting crude oil in a tank into a tank, shifting crude oil between tanks, and the like.

A second object of the present invention is to provide a tank schedule creation support device which can support the creation of a schedule used when oil is passed from a tank to a topper, and which can be easily realized. It is in.

Another object of the present invention is to provide a program recording medium on which a program capable of operating a computer as a tank schedule creation support device capable of solving the first or second problem is recorded. It is in.

[0009]

In order to solve the above-mentioned first problem, according to a first aspect of the present invention, when distributing petroleum stored in a plurality of containers to a plurality of tanks, each of the petroleum products is divided into a plurality of tanks. The tank schedule creation support device used to determine the amount of oil to be distributed to each tank is divided into (a) the in-container inventory, which is the virtual inventory of petroleum in each container, and the oil in each tank. In-tank volume, which is the virtual inventory amount of petroleum, specific gravity in the tank, which is the virtual specific gravity of petroleum in each tank, and the amount of petroleum that is virtually moved from each container to each tank Data storage means for storing the amount of petroleum transfer, and (b) the combination of the difference between the specific gravity of the petroleum in the tank from the target specific gravity and the specific gravity of the petroleum in the container, and the correspondence with the transfer amount unit Correspondence storage means for storing the relationship;
(C) setting the stock quantity of a plurality of petroleums stored in the plurality of containers as the stock quantity in the container in the data storage means,
Initially, the stock quantity and specific gravity of the petroleum in the plurality of tanks are set as the stock quantity in the tank and the specific gravity of the petroleum in the tank in the data storage means, and "0" is set in the movement quantity of the petroleum in the data storage means. Value setting means, and (d) specifying means for sequentially specifying a combination of a container for virtual oil movement, a target container as a tank, and a target tank from among a plurality of containers and a plurality of tanks, ) Based on the correspondence stored in the correspondence storage means, the specific gravity of the petroleum stored in the target container specified by the specifying means, and the oil content in the tank related to the target tank stored in the data storage means Acquiring means for acquiring a moving amount unit corresponding to a difference of the specific gravity from a target specific gravity of the target tank; and (f) inventory amount in the container relating to the target container and data relating to the target tank stored in the data storage means. Using the in-stock inventory and the specific gravity of the petroleum in the tank as data indicating the state of the target container and the target tank before the petroleum transfer, the transfer of petroleum for the transfer amount unit acquired by the acquisition means Is calculated, the corresponding data in the data storage means is rewritten with the calculated data, and the amount of oil transfer in the data storage means corresponding to the target container and the target tank is calculated by the transfer amount unit. Updating means for performing an updating process in which the stock amount in the container for the target container is equal to or larger than the transfer amount unit, and the stock amount in the target tank after the transfer of petroleum does not exceed the storage capacity of the target tank. An updating means for performing the updating process; and (g) a container and a tank which can be updated in the plurality of containers and the plurality of tanks by the updating means of the data stored in the data storage means. When viewed combined is no longer present, constitutes using a stop control means for stopping the operation of a particular unit.

By employing such a configuration, the VLCC is used, for example, when lifting petroleum, such as crude oil, into a tank or when shifting petroleum between tanks, using only four simple arithmetic operations. Tank schedule creation support device that can determine an appropriate schedule (the amount of oil transferred from each container to each tank), that is, a tank schedule creation support device that can easily create a tank schedule and that can be easily realized. Is obtained.

In implementing the tank schedule creation support device according to the first aspect of the present invention, a constraint for storing a constraint condition imposed when distributing petroleum stored in a plurality of containers to a plurality of tanks. Whether or not a result that does not satisfy the constraint condition stored in the constraint condition storage unit is obtained based on the data stored in the data storage unit when the stop is performed by the condition storage unit and the stop control unit. And a determination unit that determines a combination of a container and a tank that does not move petroleum based on the result when it is determined that a result that does not satisfy the constraint condition is obtained by the determination unit. In addition to the decision means,
If the combination of the target container and the target tank is a combination in which the determination means does not move the petroleum, it is preferable to employ an updating means that does not perform the updating process.

By adopting such a configuration, a tank schedule creation support device capable of easily finding a schedule that satisfies the constraints imposed by the actual device configuration in the refinery can be obtained.

When the tank schedule creation support device of the first aspect is realized, the correspondence storage means stores the specific gravity of the petroleum in the container at a distance from the target specific gravity of the petroleum in the tank. In addition to adopting means for storing the correspondence between the distance from the unit and the unit of movement amount, the specific gravity of the petroleum stored in each container and Means for acquiring a moving amount unit to be used for the combination of the target container and the target tank using the average specific gravity calculated from the in-container inventory amount as the predetermined specific gravity may be adopted.

In order to solve the second problem, in a second aspect of the present invention, petroleum stored in a plurality of tanks is converted into a petroleum processing device (for example, a topper) or a petroleum transport device (for example, For example, a tank schedule creation support device used to create an oil passage schedule when supplying to a supply target device such as a tanker, a pipeline, a tank truck, or the like is provided by (a) one or more tanks in a plurality of tanks. A set specifying means for specifying all sets which are a combination of tanks capable of supplying petroleum to the supply target apparatus; and (b) a parent oil schedule which is a list including all the sets specified by the set specifying means. (C) a parent communication schedule stored in the parent oil schedule storage means. A child oiling schedule creating means for creating a predetermined type of child oiling schedule by replacing the order of the set included in the schedule according to a predetermined rule, and creating a child oiling schedule having the same content as the parent oiling schedule, (D) Obtain the number of sets actually used when each of the sub-oiling schedules created by this sub-oiling schedule creating means is used, and select the sub-oiling schedule with the smallest number of used sets. Then, the parent oil schedule updating means for storing the selected child oil schedule in the parent oil schedule storage means as the parent oil schedule, and (e) updating the parent oil schedule by the parent oil schedule updating means. If the stop condition given in advance is not satisfied at the time of To function means, when a stop condition is met, constructed using the stop control means for outputting information about the parent oil passage schedule stored in the parent oil passage schedule storage unit.

If such a configuration is employed, it is suitable to use the petroleum in the tank to a supply target device such as a topper with only simple array variable processing and four arithmetic operations. Tank schedule creation support device capable of finding an oil passage schedule with a small number of sets to be set (ie, a small number of switchings), that is, a tank schedule creation support device that can easily create a tank schedule and that can be easily realized. Is obtained.

In order to solve the second problem, in a third aspect of the present invention, an oil passing schedule for supplying petroleum stored in a plurality of tanks to a petroleum processing apparatus is created. (B) tank information storage means for storing the amount and specific gravity of petroleum stored in each tank;
A specific gravity condition specifying means for specifying a specific gravity condition which is a condition relating to specific gravity to be satisfied by the petroleum to be supplied to the petroleum processing apparatus; and (c) using a plurality of tanks by using information stored in the tank information storage means. A specific gravity calculating means for calculating the specific gravity when the petroleum in the tanks of each tank group capable of supplying petroleum to the petroleum processing apparatus is composed of one or more tanks, and (d) the specific gravity calculating means A set specifying means for specifying, as a set used for supplying oil to the petroleum processing apparatus, a tank group whose specific gravity calculated by the specific gravity condition specified by the specific gravity condition specifying means is specified; Creating a familiar oil schedule that is a list including all the sets specified by the means, and a familiar oil schedule creating means to be stored in the familiar oil schedule storage means;
(F) A predetermined type of child oiling schedule is created by changing the order of the sets included in the oiling schedule stored in the oiling schedule storage means in accordance with a predetermined rule, and the same contents as the oiling schedule are created. And (g) calculating the number of sets actually used when each of the child oiling schedules created by the child oiling schedule creating means is used. (B) selecting a sub-oiling schedule that uses the least number of sets and storing the selected sub-oiling schedule as a parent oiling schedule in the parent oiling schedule storage means; When the renewable oil schedule is updated by the renewable oil schedule update means, a predetermined stop condition is satisfied. If the stop condition is satisfied, stop control for outputting the information on the parent oil schedule stored in the parent oil schedule storage means when the stop condition is satisfied. And means.

By adopting such a configuration, it is possible to create an oil passage schedule capable of supplying petroleum having a desired property (specific gravity) to the supply target device. In comparison, an easy-to-use tank schedule can be obtained.

In realizing the tank schedule creation support device of the third aspect, a petroleum supply for designating a petroleum supply rate, which is a daily amount of petroleum to be supplied to the petroleum processing device, is provided. In addition to a rate designating means and a day condition designating means for designating the number of days for specifying the number of days for which oil is to be supplied to the petroleum processing apparatus, the specific gravity calculated by the specific gravity calculating means is used as a set specifying means. The tank group that satisfies the specific gravity condition specified by the condition specifying means is specified as a set used for creating a schedule, and the information stored in the tank information means and the oil supply rate specified by the oil supply rate specifying means are specified. And a means for calculating the number of days that petroleum can be supplied to the petroleum processing unit using each set, based on The number of sets actually used when each of the sub-passage schedules was created and the total number of days during which the supply of petroleum to the petroleum processing unit, which was created by the sub-passage schedule creation means, From the sub-oiling schedules that satisfy the number of days conditions specified by the number-of-days condition specifying means, select the sub-oiling schedule with the least number of sets to be used, and select the selected sub-oiling schedule as the parent oiling schedule. Means for storing the schedule in the familiar oil schedule storage means can be employed.

Also, as a palliative oil schedule creating means, a list including all the sets specified by the set specifying means is created. Means for storing in the means, and as the child oiling schedule creating means, for each parent oiling schedule stored in the oiling schedule storing means, the order of a set included in the parent oiling schedule is predetermined. A means for creating a predetermined type of child oiling schedule by exchanging according to the rules and for creating a child oiling schedule having the same contents as the parent oiling schedule is adopted. Means for storing the schedule in the affiliation oil schedule storage means instead of the original affiliation oil schedule When the stop condition is satisfied, the stop control unit employs the least number of the actually used sets among the plurality of the oil pass schedules stored in the oil pass schedule storage unit. Means for outputting information on the familiar oil schedule may be adopted.

Further, the tank schedule creation support device according to the first to third aspects of the present invention does not need to be configured as a dedicated device, and stores a program for causing a computer to operate as an aggregate of the above means. A tank schedule creation support device may be realized by preparing a recording medium and causing a computer to execute the program in the program recording medium.

[0021]

Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 shows a block diagram of a tank schedule creation support device according to an embodiment of the present invention. As illustrated, the tank schedule creation support device 10 of the embodiment includes an input unit 11, an output unit 12, and a control unit 13.

The input unit 11 includes a keyboard (KBD) 15
The output unit 12 includes a monitor 17 and a printer 18. The control unit 13 includes a CPU 21 and a ROM 2 as main components.
2, RAM23, hard disk drive (HD DRIVE) 2
4. A floppy disk drive (FD DRIVE) 25 is provided. Further, the control unit 13 also includes various interface circuits 26 that are connected to each device that forms the input unit 11 and the output unit 12. A bus 27 is provided between each element in the control unit 13.
The components outside the control unit 13 that constitute the tank schedule creation support device are controlled by the CPU 21 via the bus 27 and the interface circuit 26. Each element in the control unit 13 controls the bus 27 It is controlled by the CPU 21 through the CPU.

The tank schedule creation support program provided on the floppy disk 28 is installed in the hard disk drive 24 (the hard disk therein) as schematically shown in the figure. An operating system (OS) is also installed in the hard disk drive 24. When the power is turned on, the CPU 21 stores the operating system (OS) in the hard disk drive 24 according to a bootstrap loader stored in the ROM 22. The OS is read into the RAM 23. Next, the CPU 21 starts an operation according to the OS, and when detecting that a predetermined operation has been performed on the input unit 11, starts an operation (control) according to the tank schedule creation support program. At this time, the CPU 21
Uses the RAM 23 and the hard disk drive 24 as a storage device for various types of input data and a schedule created based on the data.

Hereinafter, the operation procedure of the CPU 21 when following the tank schedule creation support program, that is, the operation procedure of the present tank schedule creation support apparatus will be described in detail.

First, an outline of the tank schedule creation support program will be described. As shown in FIG. 1, the tank schedule creation support program is a program that causes the CPU 21 to execute three processes named a crude oil discharge schedule creation process, a crude oil shift schedule creation process, and a crude oil passage schedule creation process. It has become.

Among these, the crude oil unloading schedule creation processing is performed for each kind of crude oil carried (conveyed) by tanker (VLCC) to each tank provided in a refinery where the present apparatus is used. This is a process for determining the amount of unloading. The crude oil shift schedule creation process is a process for determining a shift amount of crude oil necessary to make a desired property of crude oil in a target tank. The oil passage schedule creation processing is processing for creating a schedule for supplying crude oil in the tank to the topper. In short, the crude oil discharge schedule creation processing, the crude oil shift schedule creation processing, and the crude oil passage schedule creation processing do not need to be executed continuously. For this reason, in the tank schedule creation support device, the tank schedule creation support program causes the CPU 21 to execute the control as shown in FIG.

That is, when the tank schedule creation support program is started, the CPU 21 first displays a main menu screen on the monitor 17 for allowing the operator to select which processing to execute (step S10).
1). Thereafter, the CPU 21 starts a process of recognizing the content of the operation performed by the operator on the input unit 11 based on the signal from the input unit 11 (step S102). Then, when it is detected that the operation content of the operator instructs execution of the crude oil discharge schedule creation processing (step S102; unloading), the crude oil discharge schedule creation processing (step S103) is started. After the completion of the process, the process returns to step S101 again. Further, when it is detected that the operation content of the operator instructs execution of the crude oil shift schedule creation processing (step S102;
In (shift), a crude oil shift schedule creation process (step S105) is started, and after the completion of the process, the process returns to step S101. Similarly, when it is detected that the operation content of the operator instructs execution of the crude oil passage schedule creation process (step S102; oil passage), the crude oil passage schedule creation process (step S105) is executed. After that, the process returns to step S101. When it is detected that an instruction to end the program has been given (step S
102; end), the CPU 21 ends the tank schedule creation support program.

Hereinafter, a crude oil discharge schedule creation process will be described.
The crude oil shift schedule creation process and the oil passage schedule creation process will be sequentially and specifically described. <Crude Oil Unloading Schedule Creation Processing> First, the outline of the crude oil unloading schedule creation processing will be described with reference to FIGS. FIG. 3 is an overall flowchart of the crude unloading schedule creation process, and FIG. 4 is an explanatory diagram of a menu selection screen which is a screen displayed on the monitor 17 during the crude unloading schedule creation process.

As shown in FIG. 3, at the time of the crude oil unloading schedule creation processing, the CPU 21 controls each unit so that the menu selection screen is displayed on the monitor 17 (step S201). Next, the process shifts to a state of waiting for an operator's instruction to be input (step S202).

As shown in FIG. 4, the menu selection screen includes “crude oil maintenance”, “tank maintenance”,
Buttons with words such as “Unloading Crude Oil (VLCC)”, “Unloading Tank”, “Fried Volume Rule”, “Fried Volume Calculation” (hereinafter also referred to as menu button), “NEXT”,
The screen has buttons having words such as “PREVIOUS” and “END” (hereinafter also referred to as operation buttons).

The usage of this menu selection screen is the same as the usage in a general program for displaying this kind of screen. That is, in step S202 (FIG. 3), the CPU 21 detects that a predetermined operation (pressing an arrow key, an enter key, or the like) has been performed on the keyboard 15, or has performed a predetermined operation on the mouse 16. When it is detected that (mouse button click) has been performed, it is determined that an instruction from the operator has been input. Then, a process corresponding to the content is executed.

More specifically, when it is detected that an operation to change the button to be the target of the enter key (the button corresponding to the processing executed when the enter key is pressed) is performed. Changes the display content according to the operation content. For example, when the menu selection screen is in the state shown in FIG. 4 (when it is shown in a form different from other buttons of the “crude oil maintenance” button),
When detecting that the down arrow key or the right arrow key has been pressed in step S202, the CPU 21 determines in step S203 that only the “tank maintenance” button is shown in a different form from the other buttons in the interface circuit 26 _3. Control. Further, the CPU 21
Indicates that the “Tank Maintenance” button is currently displayed in a special form in the RAM 23 and that the button is a target of the enter key.

The CPU 21 operates an operation button "NEX"
When the "T" button is detected, the same control as above is performed. When the up arrow key or the left arrow key is pressed, and when the "PREVIOUS" button is selected. When the "Tab" key is detected, the reverse of the above control is performed. When the "Tab" key is pressed, processing for changing the target of the Enter key (display of the "END" button, etc.) is performed. Change of form).

When one of the menu buttons is selected by pressing the enter key or by using a mouse, a process corresponding to the selected menu button is executed.

That is, the CPU 21 reads “crude oil Mainten
If it is detected that the "ance" button is selected, in step S203, a crude oil maintenance process is performed, and the process returns to step S202.
e ”,“ Unloading Crude Oil (VLCC) ”,“ Unloading Tank ”,
When it is detected that the “frying amount rule” button is selected, in step S203, after performing the tank maintenance process, the unloading crude oil setting process, the unloading tank setting process, and the frying amount rule setting process, Step S2
Return to 02. Further, when it is detected that the “calculation of frying amount” button is selected (step S202; calculation), after calculating the frying amount of crude oil (step S204),
It returns to step S202.

Each process performed in step S203 includes data necessary for the calculation of the amount of fried crude oil performed in step S204 by using a hard disk drive and a RAM.
It is a process for preparing within. The unloading crude oil setting process is a process that uses a table created by the crude oil maintenance process, and the unloading tank setting process is a process that uses a table created by the tank maintenance process. That is, when creating an unloading schedule using this device,
Menu buttons are selected in order from the top, and finally,
The calculation processing of the amount of fried crude oil is executed.

Hereinafter, each process will be described in detail. First,
A description will be given of crude oil maintenance processing. The crude oil maintenance process is a process for creating a crude oil information table, which is a table storing various properties of crude oil in association with crude oil symbols, and updating the contents. The crude oil information table is used at the time of unloading crude oil setting processing and crude oil freight calculation processing described later.

As shown in FIG. 5, during the crude oil maintenance process, the CPU 21 first obtains the contents of the crude oil information table stored in the hard disk drive 24 (step S301). Next, the CPU 21 displays a crude oil information table updating dialog box for updating the contents of the crude oil information table using the acquired contents (step S302). And the CPU 21
Is in a state of waiting for an instruction input by the operator (step S30)
Go to 3).

As shown in FIG. 6, a dialog box for updating the crude oil information table includes a plurality of data input display fields 34 for displaying data (crude oil symbol, crude oil name, API degree, etc.) in the crude oil information table, and a scrolling box for scrolling. A crude oil information input display area 31 including a button 35 and the like, an “OK” button 32,
It has a “CANSEL” button 33. If the crude oil information table does not exist in the hard disk drive 24 (the crude oil maintenance process is executed first after the installation of the tank schedule creation support program), the CPU 21 determines in step S302 that all the data has been input. A dialog box for updating the crude oil information table with the display field 34 blank is displayed.

In step S303, when it is detected that the data input display field 34, the button 35, or the like has been selected, or when it is detected that a character has been input,
The CPU 21 branches to the “other” side. And
A process according to the instruction is performed (step S304). For example, when detecting that any one of the data input display fields 34 is selected, a cursor (not shown) is displayed in the selected data input display field 34. When it is detected that the character input has been performed, the input character is displayed at the cursor position, and the cursor is moved rightward by one character. Further, when the scroll button 35 ₁ or 35 ₂ is detected that the selected, in a direction corresponding to the selected button, to scroll the display content of crude information input display area 31. After executing the processing corresponding to the instruction in this manner, the CPU 21 returns to step S303 and waits for a new instruction to be issued.

When the CPU 21 detects that the "OK" button has been selected, the CPU 21 rewrites the contents of the crude oil information table with the display contents at that time (step S3).
05). Next, the dialog box is erased (step S306), and the crude oil maintenance process ends. That is, the display content of the monitor 17 is returned to the menu selection screen, and the processing from step S202 is started. On the other hand, when it is detected that the "CANSEL" button is selected (step S303; CANSEL), the dialog box is erased without rewriting the crude oil information table (step S306), and the crude oil maintenance processing ends. I do.

Next, the tank maintenance processing will be described. The tank maintenance process is a process for creating and updating a tank information table, which is a table storing data indicating the specifications and the current state of each tank provided in the target facility. The tank information table is used at the time of unloading tank setting processing and crude oil fry amount calculation processing described later.

CPU during the tank maintenance process
The operation procedure of 21 is exactly the same as the operation procedure at the time of crude oil maintenance processing except that the table in which the content is updated is different.

That is, at the start of the tank maintenance process, the CPU 21 first obtains the contents of the tank information table. Then, a dialog box for updating the tank information table is displayed using the acquired contents. The tank information table is a table in which the capacity, the stock amount, the current API level, the target API level, and the like of each tank are stored in association with the tank number that is the identification information of the tank. For this reason, during the tank maintenance processing, the CPU 21 displays a dialog box for updating the tank information table as shown in FIG.

Thereafter, the CPU 21 changes the display contents of the dialog box (changes, adds, or deletes data) in accordance with an instruction from the operator. Then, when the end instruction is given, the dialog box is erased and the tank maintenance processing ends. At this time, if the end instruction is given by the “OK” button, the contents being displayed, that is, the changed data are stored in the tank information table, and then the tank maintenance processing is ended.

Next, the unloading crude oil setting process will be described. The unloading crude oil setting process is a process for selecting the type of crude oil mounted on the VLCC to be unloaded and setting the amount thereof. As described above, in this process, the CPU 21 uses the crude oil information table. Also, a table named a calculation condition table is used. The calculation condition table is a set of variables used at the time of calculating the amount of unloading of crude oil, and includes information on unloading crude oil and unloading tank information. The unloading crude oil setting process is a process for setting and updating unloading crude oil information, and the unloading tank information is set and updated in a unloading tank setting process described later.

Specifically, during the unloading crude oil setting process, the CPU
21 first reads the crude oil symbol stored in the crude oil information table and the unloading crude oil information stored in the calculation condition table. Then, using the read data,
Open the dialog box for setting unloading crude oil.

As shown in FIG. 8, the unloading crude oil setting dialog box includes a crude oil list display area 36, an unloading crude oil display area 37, and some buttons. The crude oil list display area 36 is an area in which a list including a plurality of crude oil symbols is displayed, and the CPU 21 displays this list using the crude oil symbols obtained from the crude oil information table.

The unloading crude oil display area 37 is an area in which the type of crude oil (crude oil symbol) and the amount of crude oil in the VLCC to be unloaded are displayed. The unloading crude oil information in the calculation condition table corresponds to the display contents of this area,
Displays significant unloading crude oil information in the unloading crude oil display area 37 when significant unloading crude oil information is stored in the calculation condition table. In the case where the unloading crude oil setting process is first executed in the crude oil unloading schedule creation process, since the significant unloading crude oil information is not stored in the calculation condition table, the unloading crude oil display showing only the frame is displayed. The area 37 is displayed.

After displaying the unloading crude oil setting dialog box according to the contents of the crude oil information table and the calculation condition table, the CPU 21 shifts to a state of waiting for an operator's instruction input. Then, a process according to the input instruction is executed.

For example, when any of the crude oil symbols in the crude oil list is selected, the fact that the crude oil symbol is selected is stored, and the display form is changed. When it detects that the right arrow button has been selected,
The crude oil symbol that stores the selection is displayed in a crude oil symbol display box in the unloading crude oil setting area 37 where the crude oil symbol is not displayed. Next, a cursor is displayed in a crude oil amount display setting column corresponding to the crude oil symbol display column, and a state is entered in which input of numerical data is accepted. Then, when numerical data is input, the numerical data is displayed in a crude oil amount display setting column.

When a crude oil symbol display field in which a crude oil symbol is displayed in the unloading crude oil setting area 37 is selected,
The CPU 21 stores that the crude oil symbol is selected, and changes the display mode. Then, when the left arrow button is selected, the information on the crude oil symbol that stores the selection is deleted from the unloading crude oil setting area 37.

When the "OK" button is selected, the combination of the crude oil symbol and the amount of crude oil displayed in the unloading crude oil setting area 37 is set as unloading crude oil information in the calculation condition table, and then the dialog is displayed. The box is deleted, and the unloading crude oil setting process ends. On the other hand, when it is detected that the "CANSEL" button is selected, the dialog box is erased without rewriting the unloading crude oil information, and the unloading crude oil setting process ends.

Next, the unloading tank setting process will be described.
The unloading tank setting process is a process for setting (selecting) a tank for lifting crude oil in the VLCC, and is performed using the tank information table and the calculation condition table as described above.

During the unloading tank setting process, the CPU 21 reads the tank number set in the tank information table and the unloading tank information set in the calculation condition table. Then, a dialog box for unloading tank setting is displayed using the read data.

As shown in FIG. 9, the unloading tank setting dialog box includes a tank list display area 38, an unloading tank display area 39, and some buttons. The tank list display area 38 shows the tank numbers of selectable tanks.
Is displayed, and the CPU 21 displays this list using the tank number obtained from the tank information table.

The fried tank display area 39 is an area where the tank number of the tank to be unloaded is displayed. The fried tank information in the calculation condition table is information including the tank number (data other than the tank number will be described later). If the calculation condition table stores significant fried tank information, The tank number included in the fried tank information is displayed in the fried tank display area 39. As in the case of the unloading crude oil setting process, when the unloading tank setting process is first executed in the unloading schedule creation process, the calculation condition table does not store significant unloading tank information. The displayed fried tank display area 39 is displayed.

After displaying the unloading crude oil setting dialog box according to the contents of the tank information table and the calculation condition table (fried tank information), the CPU 21 shifts to a state of waiting for an operator's instruction input, and unloads. It responds to the operator's instruction in the same procedure as during the crude oil setting process.

When it is detected that the “OK” button is selected, the upper limit value of the tank identified by each tank number displayed in the fried tank setting area 39 is set.
The inventory amount, API degree, target API degree, sulfur content, etc. are read from the tank information table. Next, fried tank information is created by combining the read data and the corresponding tank number, and the fried tank information is set in the calculation condition table. After that, the dialog box is erased, and the fried tank setting process ends.

On the other hand, when it is detected that the "CANSEL" button is selected, the dialog box is simply erased without performing the above-described update processing of the fried tank information, and the fried tank setting processing is performed. To end.

Next, the frying amount rule setting process will be described. The frying amount rule setting process is a process for updating the contents of the frying amount rule table, the contents of which are referred to at the time of calculating the amount of frying oil. For convenience of explanation,
Specific meaning of each data set in this process (use)
Shall be described when calculating the amount of frying of crude oil.
Mainly, the contents of the dialog box displayed during the frying amount rule setting process (the type of data set in the frying amount rule setting process) will be described.

At the start of the frying amount rule setting process, the CPU 2
1 first obtains the contents of the fried amount rule table.
Then, a dialog box for setting a frying amount rule as shown in FIG. 10 is displayed using the acquired contents.

As shown in the figure, the fried amount rule setting dialog box 40 includes a fried amount rule input display area 41.
And a fried amount unit input display area 42, a fried restriction input display area 43, an "OK" button, and a "CANSEL" button.

Each of the fried amount rule input display areas 41 has nine data display fields 45 provided with data selection buttons 46. Each data display column 45 is a column in which any of "small amount", "medium amount", and "large amount", which are information indicating the fry amount rank, is displayed.
Condition of crude oil in tank ("heavy", "medium", "light")
And the state of the crude oil to be fried ("heavy", "medium", "light"). Button 46 for data selection
Are buttons for changing the display contents of the data display column 45.

The fried amount unit input display area 42 has three data input display columns 47, and the fried amount unit to be associated with each fried amount rank is set using these data input display columns 47.

The fried restriction input display area 43 is an area for selecting a fried restriction condition to be applied at the time of calculating the fried amount from a predetermined number of fried restriction conditions prepared in advance. As shown in the figure, the fried constraint input display area 4
Reference numeral 3 includes a code input display column, a constraint value input display column, a constraint name display column, an explanation display column, a valid / invalid display column, and the like.

The code input display field is a field for displaying a code assigned to the restriction condition.
1 displays a constraint name and a description corresponding to the code shown in the code input display column in a constraint name display column and a description display column. In the constraint value display column and the valid / invalid display column, information corresponding to the data stored in the fried amount rule table in association with the code is displayed.

During the frying amount rule setting process, the CPU 21
After displaying the frying amount rule setting dialog box 40 according to the contents of such a frying amount rule table, the display contents are changed in accordance with the instruction of the operator.

For example, when it is detected that the data selection button 46 has been selected, the corresponding data display field 45
Change the display contents of to the next rank. That is, every time the selection of the data selection button 46 is detected, “a small amount” →
The display contents of the data display column are changed to "medium amount" → "large amount" → "small amount". When a character (numerical value) is input after the data input display field 47 in the fried amount unit input display area 42 is selected, the input numerical value is displayed in the data input display field 47. The same operation is performed when a data input operation is performed on a constraint value input display field related to a lift constraint condition in which a constraint value can be set in the lift constraint input display area 43. When it is detected that the button shown on the right side of the valid / invalid display column is selected, and when the display content of the corresponding valid / invalid display column is "invalid", the display content To “valid”. Conversely, if the display content of the valid / invalid display column is "valid", the display content is changed to "invalid".

When it is detected that the "OK" button has been selected, the contents of the frying amount rule table are updated to those corresponding to the contents being displayed, and the dialog box 40 is erased. The quantity rule setting process ends.
On the other hand, if it is detected that the “CANSEL” button has been selected, the process is terminated without updating the contents of the frying amount rule table.

If the contents of the frying amount rule input display area 41 are changed to an inappropriate one, the calculation will not converge well (crude oil in the VLCC will not be distributed well; details will be described later). Input display area 41
Are maintained as shown. That is, the frying amount rule setting process is usually used to change only the frying amount unit and the frying constraint.

Next, the calculation of the amount of fried oil will be described with reference to FIGS. FIG. 11 is an overall flowchart of the calculation of the amount of fried oil, and FIG. 12 is a flowchart of the fuzzy calculation executed at the time of the calculation of the amount of fried oil. FIG. 13 is an explanatory diagram of a dialog box for calculating the amount of frying displayed during the calculation of the amount of frying of crude oil.

As shown in FIG. 11, at the time of calculating the amount of fried oil, the CPU 21 first obtains the contents of the calculation condition table (step S401). Next, a fry amount calculation dialog box is displayed using the contents (step S402), and the process shifts to a state of waiting for an operator's instruction input (step S403).

The dialog box for calculating the amount of frying is shown in FIG.
As shown in FIG. 3, the fry amount calculation ID input display area 51,
Application rule display area 52, target crude oil information display area 53,
Crude oil detailed information display area 54, target tank information display area 5
5, a tank detailed information display area 56, a "Calculate" button 57, and an "END" button 58. The illustrated dialog box for calculating the amount of frying is an example after the calculation is completed. At the start of the calculation processing of the amount of frying of the crude oil, the CPU 21 sets the display area 5
1 and each column in the applicable rule display area 52, display areas 53 to
A frying amount calculation dialog box is displayed in which all the frying amount display columns in 56 are blank.

When the CPU 21 detects that a data input operation has been performed after displaying such a dialog box for calculating the amount of frying, the CPU 21 stores the input data and displays it in the dialog box ( FIG. 11;
Step S404). "Calculate" button 57
Is detected (Step S403; Ca)
lc.), it is determined whether or not data input to the fry amount calculation ID input display area 51 has been completed (step S405). If data input has not been completed (step S405; N), the CPU 21 displays a message to that effect (not shown), and then returns to step S502. On the other hand, when the data input is completed (step S405;
Y), the CPU 21 performs a fuzzy calculation process (step S4).
06) is started.

As shown in FIG. 12, at the time of fuzzy calculation processing, the CPU 21 first initializes various variables used for calculation (step S501). The variables initialized in this step include a crude oil remaining amount variable for storing the remaining amount of crude oil, a stock amount variable for storing the tank stock amount, and an API degree variable for storing the tank API degree. The CPU 21 prepares a number of various variables corresponding to the contents of the calculation condition table, and stores a value corresponding to the contents in each variable. Set.

For example, if the unloading crude oil information contains N kinds of crude oil symbols and the fried tank information contains M kinds of tank numbers, the CPU 21 operates as follows in step S501.

The CPU 21 prepares N crude oil remaining quantity variables, and sets the N crude oil quantities in the unloading crude oil information to those variables. Also, M inventory quantity variables and M APIs
A degree variable and M hydrogen sulfide index value variables are prepared.
The variable for the inventory amount, the variable for the API degree, and the variable for the hydrogen sulfide amount index value include the inventory amount contained in the fried tank information,
An API degree and a hydrogen sulfide amount index value are set. Also, N × M
The number of movement amount variables is prepared, and “0” is set to each movement amount variable. Further, referring to the information stored in the crude oil information table, the average A of the crude oil in the VLCC is obtained from the unloading crude oil information.
The PI degree is obtained, and the average API degree is set as an average API degree variable.

After the initialization of the various variables as described above, the CPU 21 specifies one crude oil to be calculated (hereinafter, referred to as a calculation target crude oil) from the unloading crude oil ( Step S502). Next, one tank to be calculated (hereinafter referred to as a calculation target tank) is specified from the fried tanks (step S50).
3).

Thereafter, the CPU 21 determines that the combination of the crude oil to be calculated and the tank to be calculated (hereinafter, a combination of one crude oil and one tank is referred to as a pair) is a combination of the crude oil and the tank which must not be unloaded. It is determined whether the pair is a certain unloading prohibited pair (step S50).
4). Specifically, when the combination of the crude oil symbol of the calculation target crude oil and the tank number of the calculation target tank is included in the unloading pair information in the frying amount rule table, the CPU 21 determines the target pair (the calculation target crude oil). Is determined to be the unloading pair. In addition,
Although the details will be described later, the unloading pair information is 1
This is information to be set in the frying amount rule table after the calculation result is obtained.

If the target pair is not the unloading-prohibited pair (step S504; Y), the CPU 21 performs fuzzy inference using information stored in the frying amount rule table as an inference rule to calculate the API degree of the crude oil to be calculated. And average A
PI degree (value of the average API degree variable), A of the tank to be calculated
From PI degree (value of API degree variable) and its target API degree,
The frying amount unit to be used for the current target pair is calculated (step S505).

Here, with reference to FIGS. 14 and 15, the procedure for calculating the amount of fried food in step S505 will be described more specifically. As already explained, the frying amount rule table shows the state of crude oil in the tank ("heavy",
Nine categories defined by the “medium” and “light”) and the state of the crude oil to be fried (“heavy”, “medium” and “light”) are provided with frying amount ranks (“ Small amount ",
Information that associates “medium amount” or “large amount” is stored. The fried amount rule table also stores information that associates a fried amount unit with each of the three types of fried amount ranks.

That is, in the fried amount rule table, information associating each unit with a fried amount unit as shown in FIG. 14 is stored, and in step S505,
The CPU 21 calculates the fried amount unit used in the process this time by fuzzy inference using the relation between the division and the fried amount unit as an inference rule.

Specifically, the CPU 21 first calculates the average API degree Dave of the remaining crude oil from the API degree Dcrd of the crude oil to be calculated.
The current value of the value △ Dc (= Dcrd-Dave) obtained by subtracting △ Dcno
w, Target A based on API degree Dtnk of crude oil in calculation target tank
A current value △ Dtnow of a value △ Dt (Dtnk−Dtgt) obtained by subtracting the PI degree Dtgt is calculated. Next, the crude oil in the tank to be calculated,
Using the membership functions (the functions shown on the upper and left sides of FIG. 14) given to each set of the crude oil to be calculated, the membership values μ _{t1 to} μ _t3 of each set with respect to the calculated △ Dtnow, The membership values μ _{c1 to} μ _c3 of each set with respect to ΔDcnow are obtained. Then, and their membership values from fried weight unit U ₁₁ ~U ₃₃ that is set for each rule, using the following equation to calculate the Uans (fried weight unit used) the inference value.

[0085]

(Equation 1)

The right side of the above equation is the sum of nine terms.
But from the shape of the membership function shown
Clearly, μ_t1~ Μ_t3Has a value of “0”
Μ _tAt least one, and μ_c1~ Μ_c3Inside
Μ whose value is “0”_cIs at least one. That
Μ_tOr μ_cTerm is a coefficient (μ_tiμ_cj
U_ij) Is “0”, and eventually, according to the above equation,
μ_c, Μ_tRelated to rules (divisions) where both values are not “0”
The unit of frying_c・ Μ_tWeighted average value
Will be required. In other words, the above equation is △ Dtn
The intersection of ow and △ Dcnow is the hatched area in the figure.
When it is located within the two or four near the intersection
Calculate the weighted average of the frying unit for each category,
In the case of outside, the amount of frying for the category including the intersection
It is an expression to find the unit.

Then, U _ij (i = 1 to 3, j = 1 to 3)
Since U _S , U _M or U _L (U _S <U _M <U _L ) is set as shown in the figure, the actual value of μ _t3 = At 1 (when the crude oil in the tank to be calculated can be reliably determined to be “heavy”), as shown in FIG. 15A, the larger the value of ΔDc (the lighter the crude oil to be calculated, ), A large value Uans (the range is from U _{S to} U _L ) is calculated.

When μ _t2 = 1 (when it is possible to reliably determine that the crude oil in the tank to be calculated is “medium”),
As shown in FIG. 15C, when 場合 Dc is near “0” (when the API degree of the crude oil to be calculated is quite close to the average API degree of the remaining crude oil in the VLCC), Uans is defined as Uans. _L is calculated, △ absolute value of Dc as increases, Uans small value (range, U _M ~U _L) is calculated. Also, when μ _t1 = 1 (the crude oil in the tank to be calculated is “light”
15 (e), the larger the value of ΔDc (the lighter the calculation target crude oil), the smaller the value of Uans (the range is from U _S to _UL ) is calculated.

When the values of μ _t3 and μ _t2 are both values other than “0”, as shown in FIG. 15B, for example, as shown in FIG. Uans that is between Uans when μ _t3 = 1 (FIG. 15A) and Uans when μ _t2 = 1 (FIG. 15C) is calculated.
Similarly, when μ _t2 and μ _t1 are both values other than “0”, for each ΔDc value, the value of Uans when μ _t2 = 1 (FIG. 15 (c) ) And Uans when μ _t1 = 1 (FIG. 15 (e)) are calculated (FIG. 1).
5 (d)). In this way, the frying amount unit according to the API degree of the crude oil to be calculated, the crude oil in the tank, etc. was obtained (FIG. 1).
2: After step S505), the CPU 21 determines whether or not the calculation target pair is a pair in which crude oil can be moved (step S506). Specifically, in this step, the CPU determines whether or not the pair is a pair in which crude oil can be moved in the following procedure. First, the amount of residual crude oil (value of the residual crude oil quantity variable) for the crude oil to be calculated is equal to or greater than the obtained frying quantity unit, and the inventory quantity of the calculation target tank (value of the inventory quantity variable) and the acquired frying quantity unit It is determined whether or not the condition that the sum of is equal to or less than the upper limit value of the tank to be calculated is satisfied. If the condition is not satisfied, it is determined that the pair cannot transfer the crude oil. On the other hand, when the condition is satisfied, the index value of the amount of hydrogen sulfide in the calculation target tank after the movement of the crude oil for the frying amount unit is calculated. Then, only when the calculated value is equal to or less than the target value, it is determined that the pair can move the crude oil. In the present apparatus, the contents of the specific types of crude oils X and Y relative to the total crude oil are used as the hydrogen sulfide amount index value.

If the pair is capable of moving crude oil (step S506; Y), the CPU 21 updates the value of the related variable using the obtained frying amount unit (step S507). That is, the value of the variable for the remaining crude oil amount relating to the crude oil to be calculated is reduced by the obtained frying amount unit, and the value of the variable for the moving amount relating to the crude oil to be calculated and the tank to be calculated is increased by the obtained frying amount unit. Further, the API degree at the time of adding the calculation target crude oil for the obtained frying amount unit to the calculation target tank is calculated using the frying amount unit, the API degree of the calculation target crude oil, and the like. Then, the value of the API degree variable relating to the calculation target tank is rewritten with the calculated API degree. Further, the already calculated hydrogen sulfide amount index value is stored in the variable for the hydrogen sulfide amount index value of the tank to be calculated. Further, the value of the variable for the stock amount relating to the tank to be calculated is increased by the obtained unit of the frying amount.

After updating the values of the related variables in this way, the CPU 21 proceeds to step S508. on the other hand,
If the target pair is a pair in which the movement of crude oil is not possible (step S506; N), the CPU 21 proceeds to step S508 without updating the value of the variable using the obtained frying amount unit. Also, when the target pair is the unloading pair (step S504; N), the CPU 21
Proceeds to step S508.

In step S508, the CPU 21
Determines whether or not the calculation target tank is the last tank (the last tank in the tanks designated as fried tanks). If it is not the last tank (step S508; N), the process returns to step S503, where the next tank is specified as the calculation target tank, and the newly specified calculation target tank and the calculation target crude oil that has already been specified. Then, the processing after step S504 is executed. On the other hand, when the calculation target tank is the final tank (step S508; Y), it is determined whether the calculation target crude oil is the final crude oil (step S509).

If the calculation target crude oil is not the final crude oil (step S509; N), step S50
Return to 2 and identify the next crude as the crude to be calculated,
The processing after step S503 is performed. On the other hand, when the calculation target crude oil is the final crude oil (Step S508; Y), it is determined whether the determination start condition is satisfied (Step S510). In this step, the CP
U21 determines that the determination start condition is satisfied when the values of any variables are not updated in the processing including steps S502 to S509.

If the determination start condition is not satisfied (step S510; N), the average API degree of the residual crude oil in the VLCC is calculated from the value of each residual crude oil amount variable and the like, and the value is averaged. Degree variable (step S51).
1). Then, the process returns to step S502, and the above-described series of processing is performed again.

If the judgment start condition is satisfied (step S510; Y), that is, if it is longer than that, step S5
When the value of each variable is not updated even after repeating the loop from 02 to S509, the CPU 21 determines whether or not the calculation result satisfies each of the restriction conditions (step S512). Then, when there is an unsatisfied frying restriction condition (step S512; N), the CP
U21 determines the designated number of times (the number of times set in the calculation number designation column of the fry amount calculation dialog box) and whether the processing of steps S501 to S511 has been repeated (step S513).

If the specified number of repetitions has not been completed (step S513; N), the CPU 21 adds unloading prohibited pair information corresponding to the unsatisfied constraint condition to the frying amount rule table (step S514). . After that, the calculation result and the added unloading-prohibited pair information are displayed in the deep-freight calculation dialog box (step S515).
Then, the processing from step S501 is executed again. That is, a dialog box for calculating the amount of frying (see FIG. 13)
In addition, the calculation result and the value obtained from the calculation result are displayed in each of the frying amount display columns and the like in the display regions 53 to 56, and the unloading pair information is displayed in the application rule display region 52, and the fuzzy calculation process is continued.

The CPU 21 repeats such processing, and when the calculation result satisfies all the frying constraint conditions (step S512; Y), displays the calculation result in a deep-frying amount calculation dialog box (step S516). And
The fuzzy calculation processing ends. Also, even when the calculation result does not satisfy the frying constraint condition, the specified number of repetitions has been completed (step S513; Y).
, The process proceeds to step S516, and the fuzzy calculation process ends.

Then, as shown in FIG. 11, the CPU 21 shifts to a state of waiting for an instruction input by the operator (step S403), and executes a process according to the instruction input by the operator. For example, when it is detected that any of the crude oil symbol display fields in the target crude oil information display area 53 of the frying amount calculation dialog box (FIG. 13) is selected, the display contents of the crude oil detailed information display area 54 are changed. , Is rewritten into information on the crude oil identified by the crude oil symbol in the crude oil symbol display column. When it is detected that any one of the tank number display fields in the tank information display area 55 is selected, the content of the tank detailed information display area 56 is identified by the tank number in the tank number display field. Rewrite the information about the tank to be replaced.

By performing such an operation, the operator confirms the calculation result, and if necessary, adds a new frying constraint or increases the number of calculations, and then performs “Calc”.
Select the "ulate" button 57 again, and select the "END" button 58 when satisfactory results are obtained.

Upon detecting that the “END” button 58 has been selected, the CPU 21 executes a calculation result output process (FIG. 11: step S407) for printing the calculation result, and then deletes the dialog box (FIG. 11: step S407). Step S40
8) Then, the frying amount calculation processing ends (return to step S202 in FIG. 3).

As described above in detail, in the present tank schedule creation support device, a combination of a tank to be calculated and a crude oil to be calculated (from a group of crude oils and a group of freight tanks to be unloaded between them). The calculation target pairs are sequentially specified. Each time the calculation target pair is specified, the distance ΔDt of the API degree of the crude oil in the calculation target tank from the target API degree and the API of the specified calculation target crude oil are calculated.
Deviation from the average API degree of residual crude oil in VLCCＣ
Dc is calculated as a frying amount unit Uans having a corresponding relationship as described with reference to FIGS. 14 and 15, and the movement of virtual crude oil of the amount specified by the frying amount unit Uans is calculated. Is performed.

Specifically, when a tank that stores (virtually or actually) crude oil that is too heavy for the target becomes a calculation target tank, a “light” crude oil is regarded as a calculation target crude oil. If so, a “large amount” of crude oil is virtually moved, and if “heavy” crude oil is the calculation target oil, a “small amount” of crude oil is virtually moved. (See FIG. 15A). In addition, when a tank that stores crude oil that is too light in comparison to the target is the calculation target tank, and a “heavy” crude oil is the calculation target oil, the “large amount” of crude oil is assumed. When the “light” crude oil is the calculation target crude oil, a “small amount” of crude oil is virtually moved (FIG. 15).
(e)). That is, when the probability that the API degree of the crude oil in the calculation target tank can be brought close to the target value by the movement of the crude oil is high, a large amount of the crude oil is virtually moved,
Conversely, due to the movement of crude oil, the AP
When the probability that the degree I deviates from the target value is high, a small amount of crude oil is virtually moved.

Further, when crude oil having the same API degree as the target API degree is stored in the tank to be calculated, and when the “medium” crude oil is the crude oil to be calculated, Is a virtual movement of a "large amount" of crude oil, and if a "heavy" or "light" crude oil is the target crude oil, a "middle amount" of the crude oil is virtually moved (See FIG. 15 (c)). That is, if the API degree of the crude oil in the calculation target tank does not greatly deviate from the target value even if the crude oil is moved, a large amount of crude oil is virtually moved, and the movement of the crude oil causes the calculation target tank to move. In the case where the API degree of the crude oil in the tank can approach or depart from the target value, a virtual movement of the “medium amount” of crude oil is performed.

In cases other than the cases described above, the amount of crude oil whose amount has been corrected in accordance with the “light” or “heavy” degree of the crude oil to be calculated and the crude oil in the tank to be calculated is moved. Will be

As described above, in the present apparatus, the virtual movement of the crude oil in an amount corresponding to the probability (probability) that the API degree of the crude oil in the tank to be calculated after the movement of the crude oil takes a value close to the target API degree is determined. By repeating between the calculation target pairs, the VLCC
Is required to be able to distribute each crude oil in the tank to a plurality of frying tanks in a state where the API degree of the crude oil in each tank is close to the target API degree.

However, the total frying amount from a certain crude oil to a certain tank is smaller than the lower limit value of the actual frying amount, and the API degree of some tanks is too far from the target API degree. Can also occur. The process provided for this is the process of step S514. For example, the total lift amount from the crude oil whose crude oil symbol is “CS” to the tank whose tank NO is “TN” obtained as a calculation result Does not meet the minimum frying constraint,
In step S514, the CPU 21 adds the combination of “CS” and “TN” to the frying amount rule table as one element of the unloading pair information. If the API degree of a certain tank has greatly exceeded the target API degree, the CPU 21 determines in step S514 that the combination of the crude oil symbol of the crude oil having the largest API degree and the tank NO of the tank is an unloading pair. It is added to the fried amount rule table as one element of the information.

Therefore, when the branch to the “N” side is performed in step S513 (when an appropriate calculation result is not obtained), the values initially set to the respective variables are the same, With the unloading pair information added to the table, the processes of steps S502 to S511 are repeated. That is, depending on the calculation target pair, branching to the “Y” side is performed in step S504, and as a result, a more preferable calculation result different from the previous calculation result is obtained. If the second calculation result does not satisfy the frying restriction and the designated number is set to three or more, the unloading pair information is further added and recalculation is performed. However, if the calculation conditions are not special, the result of the second calculation usually satisfies the frying constraint.

<Crude Oil Shift Schedule Creation Processing> In the crude oil shift schedule creation processing, when the supply source of crude oil is VLC
The process is performed in exactly the same procedure as the crude oil discharge schedule creation process, except that the tank is not C but a tank other than a frying tank (a tank whose crude oil properties are to be made desirable by blending crude oil). ing. For this reason, here, only the parts that differ from the crude oil unloading schedule creation processing will be briefly described.

Since the crude oil shift schedule creation processing does not require the property data of the crude oil, a screen without the “crude oil maintenance” button is provided as a screen equivalent to the menu selection screen in the crude oil unloading schedule creation processing. Is displayed. Also, on the screen,
A “shifted tank” is provided as a button equivalent to the “unloading crude oil” button, and a shifted tank setting process is performed as a process corresponding to the unloading crude oil setting process. In this process, it is not necessary to set the crude oil stock amount in the tank (necessary data is stored in the tank information table), so that the dialog box shown in FIG. 9 is used instead of the dialog box shown in FIG. Dialog box appears.

In the shift amount calculation processing corresponding to the fried amount calculation processing, the shift amount is calculated in exactly the same procedure as in the fried amount calculation processing. That is, while changing the shifted tank and the shift destination tank, based on the average API degree of the crude oil in the shifted tank, the crude oil API degree in the shift tank to be calculated, the API degree of the crude oil in the shift target tank to be calculated, and the target API degree, A shift amount unit corresponding to the frying amount unit is calculated, and a shift for the unit is calculated. Then, if the obtained calculation result does not satisfy the shift rule, the shift amount is calculated again after the shift prohibition pair is determined.

<Crude Oil Passing Schedule Creation Processing>
The crude oil passage schedule creation processing will be described with reference to FIGS. In the crude oil passage schedule creation process, various dialog boxes are displayed on the monitor 17 and operations are performed using these dialog boxes, as in the crude oil unloading schedule creation process. Here, the description of the details of the dialog box will be omitted.

As shown in FIG. 16, when the execution of the crude oil passage schedule creation processing is instructed, the CPU 21
A calculation condition receiving process (step S601) for receiving data serving as a calculation condition from the operator is executed. At the time of the calculation condition reception processing, the CPU 21 sets a dialog box for setting a tank number of a tank to be used as a supply source, an API degree of crude oil to be supplied to the topper, an amount of oil per day, and a total amount of oil. A dialog box for setting the minimum and maximum possible days, the number of calculations, the start date of oiling, etc. is displayed.The operator sets each data using the displayed dialog box, and then calculates To start.

When the start of calculation is instructed (when the calculation condition receiving process is completed), the CPU 21 first creates a set information table (step S602), and uses the set information table to make three parent communication. An oil schedule is created (step S603).

FIG. 17 (a) shows an example of the set information table, and FIG. 17 (b) shows three oil-passing schedules created from the set information table shown in FIG. 17 (a).

As shown in the figure, the set information table is a table for storing the in-set tank number, the number of days that the oil can be passed, and the API degree in association with the set number. This set information table is created by a simple procedure.

First, the CPU 21 uses the connection form information table in which information indicating how the tank and the topper are connected is stored, and the tank identified by the tank number given in the calculation condition receiving process. From the group, all combinations of tanks that can supply crude oil to the topper (including a single tank; hereinafter, referred to as a set) are specified. Next, the API degree, stock amount, and the like of each tank are read from the tank information table, and the API degree of crude oil taken out from each set (hereinafter, also referred to as a set API degree) is obtained. That is, for a set consisting of only one tank, the API degree of the tank is set as API
For a set including a plurality of tanks, the API degree of crude oil obtained when each crude oil in those tanks is mixed at a ratio corresponding to the stock amount is defined as a set API degree.

Next, the CPU 21 determines whether or not the set API degree of each set satisfies a designated condition relating to the API degree. For a set for which a set API degree that satisfies the condition is obtained, a set number is given, and the stock amount (the sum of the stock amounts of the tanks constituting the set) is divided by the amount of oil per day to obtain “ Calculate the number of days that can be passed per unit. Then, a set information table is created in which the tank numbers of the tanks constituting the set (tank numbers in the set), the calculated number of days that can be passed and the API degree (set API degree) are stored in association with the set number. .

After creating a set information table including only information relating to sets available for oil passage to the topper according to such a procedure, the CPU 21 generates a set information table shown in FIG. 17B based on the created set information table. Like 3
Create two oil affairs schedules. That is, (1)
In the set information table, the parent oiling schedule in which all set numbers are arranged in ascending order, (2) the oiling schedule in which all set numbers are arranged in descending order, and (3) the average value of all set numbers ( After arranging set numbers larger than [1/2] of the total set number) in ascending order, a second oil passage schedule in which the remaining set numbers are arranged in ascending order is created in the second half.

Next, as shown in FIG.
U21 starts executing a processing loop including steps S604 to S607. At the start of each loop, the CPU 21
First selects one affiliation schedule to be processed from the three affiliation schedules (step S
604). Note that the CPU 21 determines the selection in this step in a round robin format (the lipophilic oil schedule 1 → 2 →
3 → 1 → ...). Next, the CPU 21 creates three child oil passing schedules by rearranging the selected parent oil passing schedule (step S605). Specifically, the CPU 21 determines the second set number and K of the child oiling schedule and the parent oiling schedule (the total number of set numbers is K) having exactly the same contents as the parent oiling schedule.
-The first (K-th) set number of the child oiling schedule and the parent oiling schedule in which the first set number is replaced is at the head, and the 1st to K-1st set numbers of the parent oiling schedule are 2 to K Create the second child communication schedule. Hereinafter, for convenience of description, the sub-passage schedules will be referred to as sub-passage schedules created by crossing and shifting, respectively.

Next, the CPU 21 evaluates the superiority of the created three sub-oiling schedules, and replaces the original parent oiling schedule with the most excellent sub-oiling schedule. Perform selection processing (step S606; details will be described later). If the number of loops is less than the specified number (step S607;
In Y), the process returns to step S604, and the same processing is performed for the next oil-passing schedule.

Here, using FIG. 18 and FIG. 19, the through-pass oil-oil schedule evaluation / selection process (FIG. 16: Step S60)
Details of 6) will be described. FIG. 18 is an overall flowchart of the child communication schedule evaluation / selection process, and FIG.
FIG. 8 is a flowchart of an evaluation data calculation process performed in a child communication schedule evaluation / selection process.

As shown in FIG. 18, at the time of the through-passing schedule evaluation / selection process, the CPU 21 first performs an evaluation data calculation process for each of the three through-pass schedules (steps S701 to S703). .

As shown in FIG. 19, at the time of the evaluation data calculating process, the CPU 21 firstly proceeds to step S701 (FIG. 1).
The variables for the child-passing oil schedule specified in 8) are initialized (step S801). The variables initialized in this step include a variable for the number of times of switching, a variable for the total number of days that can be passed, i, and the like. The CPU 21 initializes i to “1” and sets other variables to “0”. initialize. Also, CPU2
1 is “NULL” in the used tank list in this step
Initialization to a list (a list in which no information is stored) is also performed.

Next, the CPU 21 acquires the i-th set number of the specified child oil passage schedule (step S802). Then, the CPU 21 determines whether or not the used tank is included in the set identified by the set number (hereinafter, referred to as an i-th set) with reference to the used tank list (step S <b> 1). S803).

If the i-th set is not the set including the used tank (step S803; N), the CPU
21 adds “1” to the number of times of switching (step S805)
I do. As described above, since the used tank list is a list initialized in step S801, when i = 1, branching to step S805 is always performed.

After updating the value of the number of times of switching, the CPU 21 adds the number of days that can be passed through the set stored in the set information table to the total number of days that can be passed through the oil (step S80).
6). Next, the deviation of the API degree from the previous set (the absolute value of the difference between the API degree of the previous set and the API degree of the current set) is calculated as the total A
It is added to the PI degree deviation (step S807). Although not shown in the figure to avoid complication, the CPU 2
No. 1 executes the processing of this step only when i ≧ 2 holds.

Thereafter, the CPU 21 adds the tank numbers of the tanks constituting the i-th set to the used tank list (step S808). Then, it is determined whether or not the value of i matches the total number K of the set numbers. If the value does not match (step S809; N), the CPU 2
After adding “1” to i (step S810), 1 returns to step S802 and starts the process for the next set.

When such a process is repeated, any one of the sets including the used tank is processed. For example, in the evaluation data calculation process for the familiar oil schedule 2 shown in FIG. 17, when the process for the first set (the set whose set number is “10”) is completed, the tank number is added to the used tank list. "6010
“1”, “60104”, and “60105” are registered (these tanks are used), and the second set (set number “9”) to be processed next is the tank Since the set requires the tank with the number "60105", it is determined in step S803 that the set includes the used tank.

When it is determined that the set includes the used tank (step S803; N), the CPU 21 stores the non-use of the set (step S804) instead of updating the number of times of switching and the like, and thereafter, Step S809
Proceed to. The information stored in step S804 is
It is used in order to prevent output (display and printing) of information about a set that is not actually used at the time of the oil passage schedule output process described later.

The CPU 21 repeats such processing until i = K, and when i = K (step S
809; Y), that is, when the processing related to the last set number of the child oiling schedule ends, the evaluation data calculation processing ends.

When the evaluation data calculation process is completed for the three sub-passage schedules (FIG. 18; step S703; N), the CPU 21 determines the number of switching times obtained for each sub-passage schedule. Using the total API degree deviation as the first and second keys, the three child oil passing schedules are sorted in ascending order (step S704). In other words, the sub-passage schedule with the smaller number of times of switching is higher, and the total AP between the sub-passage schedules with the same number of times of switching is higher.
A list of the child oiling schedules in which the schedule with the smaller I-degree deviation (that is, the schedule with the smaller change in the API degree at the time of switching) is higher in rank is created. Next, from the list, the child oiling schedule that satisfies the condition that the total number of days that can be oiled satisfies the specified, and the child oiling schedule that is positioned at the highest level is specified (step S705), and the specified child oiling schedule is specified. The oil passage schedule is stored in place of the parent oil passage schedule (step S706).

It should be noted that the present apparatus can set either or both of the lower limit and the upper limit as conditions relating to the total number of days that can be passed, and do not specify any value (total oil passing). No condition is imposed on the number of possible days), and steps S705 and S70 are performed.
In 6, the CPU 21 specifies the child oiling schedule in a procedure according to the set conditions, and replaces the parent oiling schedule with the specified child oiling schedule.

[0133] Specifically, when some condition is set, the CPU 21 firstly moves to the top of the list (first
It is determined whether or not the total number of days that can pass through the sub-lubrication schedule located at (order) satisfies the designated condition. Then, when the designated condition is satisfied, the parent oiling schedule is replaced with the first-ranked child oiling schedule.
Also, if the total number of days that can pass through the first-ranked sub-lubrication schedule does not satisfy the specified conditions, it is determined whether the total number of days that can pass through the second-level sub-lubrication schedule meets the specified conditions. to decide. If the specified condition is satisfied, the parent oil delivery schedule is replaced with the second-ranked child oiling schedule. If the specified condition is not satisfied, the parent oil-filling schedule is replaced with the third-ranked child oiling schedule. Replace the oiling schedule. On the other hand, when the condition is not imposed on the total number of days that can be passed, the CPU 21 replaces the parent oiling schedule with the first-ranked child oiling schedule.

Further, the CPU 21 executes the replacement of the oil flow schedule in step S706 with the original oil flow schedule being held in the memory. In other words, the CPU 21 performs the replacement of the oil-passing schedule in such a manner that the oil-passing schedule that was the oil-passing schedule in the past can be read.

Then, as shown in FIG. 16, when the loop of the specified number of times is completed (step S607; N)
Then, the CPU 21 selects the most excellent oil-passing schedule from the three parent oil-passing schedules in the same procedure as the selection procedure in the child oil-pass schedule evaluation / selection process (step S608). After that, an oil passage schedule output process (step S609), which is a process for displaying or printing the selected parent oil passage schedule, is executed, and after that, the crude oil passage schedule creation process is ended.

At the time of oil passage schedule output processing, the CP
U21 sets the number of times of switching, the total number of days that can be passed through, and the date when switching will be performed (these dates are the starting date of passing through and the date of each set). It is output (displayed and printed) in a form in which the amount of oil available days is calculated, and the API degree change amount generated at the time of switching is understood. Further, when a predetermined instruction is inputted, the oil passing schedule used in the past as the parent oil passing schedule is also displayed in the above-described form. In other words, the tank schedule creation support device includes the oiling schedule used in the past as the parent oiling schedule,
A function is provided for displaying the number of times of switching, the total number of days that can be passed, the date on which switching is to be performed, the API degree change amount that occurs at the time of switching, and the like. The operator of the present apparatus, for example, wants to prevent switching on Sunday, or if the switching is performed on Sunday, wants the API degree change amount at that time to be equal to or less than a predetermined value. When it is desired to determine the oil passing schedule in consideration of parameters not taken into account when judging the priority of the oil passing schedule in the present apparatus, this function is used to select a more preferable oil passing schedule from the oil passing schedules generated in the past. Select an oil schedule.

In short, in the tank schedule creation support device, at the time of the crude oil passage schedule creation process, first, all the sets usable as the supply source to the topper under specified conditions are specified. Next, three kinds of palliative oil schedules, which are data defining the order of use of these sets, are created.

After that, as schematically shown in FIG.
Selection of one parent oiling schedule, creation of three child oiling schedules by exchanging the selected oiling schedules, determination of superiority and deteriorating of the three child oiling schedules created, and children determined to be the best An example of processing including replacement of the parent oiling schedule using the oiling schedule (in the figure, the child oiling schedule created by crossing) is sequentially performed on three types of oiling schedules,
Performed the specified number of times.

At the stage where the specified number of processes have been completed, the superiority or inferiority of the three types of the oil pass schedule is determined, and the oil pass schedule determined to be the best is output as the schedule to be used ( Display and print).

<Modifications> The tank schedule creation support device of the embodiment can perform various modifications.

For example, the tank schedule creation support device according to the embodiment performs 3
Although it is configured as an apparatus that uses different types of frying units, tank schedules are created so that the classification of crude oil and tanks by API degree can be made finer, and that many types of frying units can be used. A support device can also be configured. However, the effect obtained by adopting such a device configuration is that the number of loops executed until a calculation result is obtained is reduced, and therefore, as in the device of the embodiment, three types of frying amount units are selectively used. In practice, sufficient results can be obtained in practical use.

In addition, the tank schedule creation support device of the embodiment uses the distance between the API degree of crude oil and the average API degree of residual crude oil in the VLCC as a parameter for calculating the frying amount unit Uans. Average API
Although the value of the degree is configured to be updated when the calculation target crude oil has made one round, the tank schedule creation support device is configured so that the average API degree is not updated (so that the average API degree is calculated only once at first). Can also be configured. Further, the apparatus can be configured such that the classification on the crude oil side is determined not by the average API degree but by a distance from an appropriately determined reference value. However, when the apparatus is configured in this manner, the number of loops executed until a calculation result is obtained increases. Therefore, as in the apparatus of the embodiment, the average API of the crude oil in the VLCC of the calculation target crude oil
It is desirable that the frying amount unit Uans is determined based on the distance from the degree.

Further, when calculating the fried amount unit Uans by fuzzy inference, an expression having a different weighting method from equation (1) may be used, and the fried amount unit Uans is calculated by fuzzy inference. rather than being, as schematically shown in FIG. 21, Uans is, API gravity of the calculation target crude oil, based on the calculated target tank crude oil API gravity, selected from U _S, U _M, U _L The tank schedule creation support device may be configured so as to be executed.

Further, the tank schedule creation support device of this embodiment creates three child oil passage schedules from three parent oil passage schedules at the time of the crude oil oil passage schedule creation processing, and provides the most excellent child oil passage schedule. Is configured to replace the original oil passing schedule, but it is natural that the number of the oil passing schedule and the child oil passing schedule may be other than “3”. Further, the apparatus may be configured such that the selection of the oil-passing schedule to be processed is performed in a random manner instead of in a round robin format.

Further, the tank schedule creation support device of the embodiment is configured so that the oil passage schedule having a small number of switching times is determined to be superior. The longer the oil passage schedule, the smaller the number of times of switching, so the apparatus can be configured such that the oil passage schedule with the longer total oil passage possible days is determined to be superior. However, even if the total number of days that can be passed through is the same, the number of times of switching may differ,
In the case where the superiority or inferiority is determined based on the total number of days that can be oiled, it is necessary to determine the number of switching times. For this reason, it is desirable to configure an apparatus, such as the tank schedule creation support apparatus of the embodiment, so that the superiority or non-existence of the oil passage schedule is determined based on the number of times of switching.

Further, in the tank schedule creation support device of the embodiment, when creating the set information table, the specific gravity at the time of mixing the crude oil is specified from all the combinations of tanks that can physically supply the crude oil to the topper. Although it is configured to select a combination that satisfies the conditions, the apparatus may be configured to create a set information table that includes each combination of tanks that can supply crude oil to the topper as a set.

Furthermore, the tank schedule creation support device of the embodiment is a device for “crude oil”. However, the present technology is applied to petroleum (petroleum products, semi-finished products,
Naturally, it may be applied to ultra light crude oil. The only work required to obtain a tank schedule creation support device for other petroleums is to change words displayed on the monitor.

[0148]

As described above in detail, the use of the tank schedule creation support device according to the first aspect of the present invention makes it possible to lift crude oil in a VLCC to a tank or shift crude oil between tanks. Schedule can be easily created. Further, by using the tank schedule creation support devices of the second and third aspects of the present invention, a schedule for supplying crude oil from the tank to the topper can be easily created. Further, the tank schedule creation support device of each aspect is also a device that can be easily realized.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a tank schedule creation support device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing an overall operation procedure of the tank schedule creation support device of the embodiment.

FIG. 3 is a flowchart showing an overall operation procedure of the tank schedule creation support device of the embodiment at the time of crude oil unloading schedule creation processing.

FIG. 4 is an explanatory diagram of a menu selection screen displayed at the time of crude oil unloading schedule creation processing.

FIG. 5 is a flowchart showing an operation procedure of the tank schedule creation support device of the embodiment at the time of crude oil maintenance processing.

FIG. 6 is an explanatory diagram of a dialog box for updating a crude oil information table displayed at the time of crude oil maintenance processing.

FIG. 7 is an explanatory diagram of a tank information table updating dialog box displayed at the time of tank maintenance processing executed by the tank schedule creation support device of the embodiment.

FIG. 8 is an explanatory diagram of an unloading crude oil setting dialog box displayed during unloading crude oil setting processing executed by the tank schedule creation support device of the embodiment.

FIG. 9 is an explanatory diagram of a unloading tank setting dialog box displayed during unloading tank setting processing executed by the tank schedule creation support device of the embodiment.

FIG. 10 is an explanatory diagram of a fry amount rule setting dialog box displayed during a fry amount rule setting process executed by the tank schedule creation support device of the embodiment.

FIG. 11 is an overall flowchart of a crude oil fry amount calculation process executed by the tank schedule creation support device of the embodiment.

FIG. 12 is a flowchart of a fuzzy calculation process executed at the time of calculating the amount of fried crude oil.

FIG. 13 is an explanatory diagram of a dialog box for calculating the amount of frying displayed at the time of calculating the amount of frying of crude oil.

FIG. 14 is a diagram for explaining the principle of the calculation processing of the amount of fried oil by the tank schedule creation support device according to the embodiment.

FIG. 15 is a diagram for describing a procedure for calculating the amount of frying in the tank schedule creation support device of the embodiment.

FIG. 16 is an explanatory diagram showing the relationship between the amount of frying calculated by the tank schedule creation support device of the embodiment and △ Dc and △ Dt.

FIG. 17 is an explanatory diagram of a set information table created during a crude oil passage schedule creation process and a parent oil passage schedule.

FIG. 18 is an overall flowchart of a sub-passage schedule evaluation / selection process executed during a crude pass-through schedule creation process.

FIG. 19 is a flowchart of an evaluation data calculation process performed in the child communication schedule evaluation / selection process.

FIG. 20 is an explanatory diagram of a crude oil passage schedule creation process.

FIG. 21 is a diagram for explaining a procedure that can be used when calculating the amount of frying of crude oil.

[Explanation of symbols]

 Reference Signs List 10 Tank schedule creation support device 11 Input unit 12 Output unit 13 Control unit 15 Keyboard 16 Mouse 17 Monitor 18 Printer 21 CPU 22 ROM 23 RAM 24 Hard disk drive 25 Floppy disk drive 26 Interface circuit 27 Bus 28 Floppy disk

Claims (8)

[Claims] 1. A tank schedule creation support device used for determining an amount of oil to be distributed to each tank when distributing oil stored in a plurality of containers to a plurality of tanks, The in-container inventory, which is the virtual inventory of oil in each container, the in-tank inventory, which is the virtual inventory of oil in each tank, and the virtual inventory of oil in each tank Data storage means for storing the specific gravity of the petroleum in the tank, which is the specific gravity, and the amount of petroleum transferred, which is the amount of petroleum virtually moved from each container to each tank, and the target specific gravity of the specific gravity of the petroleum in the tank A correspondence relationship storage unit that stores a combination of a distance from the container and a specific gravity of petroleum in the container, and a correspondence relationship with a unit of movement amount, and stores in the plurality of containers as a stock amount in the container in the data storage unit. Inventory of multiple petroleum products And setting the stock quantity and specific gravity of the petroleum in the plurality of tanks as the stock quantity in the tank and the specific gravity of the petroleum in the tank in the data storage means. Initial value setting means for setting 0 "; and specifying sequentially a combination of a container, a target container which is a tank, and a target tank which are to move virtual petroleum from the plurality of containers and the plurality of tanks. Means, based on the correspondence stored in the correspondence storage means,
The specific gravity of petroleum stored in the target container specified by the specifying means, and the specific gravity of petroleum in the tank related to the target tank stored in the data storage means, the distance from the target specific gravity of the target tank. Acquiring means for acquiring a moving amount unit corresponding to the above, the stock amount in the container for the target container, the stock amount in the tank for the target tank, and the specific gravity of the petroleum in the tank stored in the data storage means, Using the data representing the state of the target container and the target tank before being performed, calculate the data after the petroleum transfer by the transfer amount unit obtained by the obtaining unit is performed, and the calculated data is used to calculate the data. The corresponding data in the data storage means is rewritten, and the amount of petroleum transfer in the data storage means corresponding to the target container and the target tank is increased by the transfer amount unit. Updating means for performing an updating process, wherein the in-container inventory of the target container is equal to or more than the transfer amount unit and the in-tank inventory of the target tank after the transfer of petroleum does not exceed the storage capacity of the target tank. Update means for performing the update processing; and a combination of a container and a tank in which the data stored in the data storage means can be updated by the update means in the plurality of containers and the plurality of tanks. And a stop control unit for stopping the operation of the specifying unit when the tank runs out. 2. A constraint condition storage unit for storing a constraint condition imposed when distributing petroleum stored in the plurality of containers to the plurality of tanks, and when a stop is performed by the stop control unit. Determining means for determining, based on the data stored in the data storage means, a result that does not satisfy the constraint conditions stored in the constraint condition storage means; and When it is determined that a result that does not satisfy the constraint condition is obtained, a determining unit that determines a combination of a container and a tank that does not perform movement of petroleum based on the result, further comprising: When the combination of the target container and the target tank is a combination in which the determination means does not move the petroleum, the updating process is not performed. 1. The tank schedule creation support device according to 1. 3. The correspondence relationship storage means stores a correspondence relationship between a combination of a difference between a specific gravity of petroleum in a tank from a target specific gravity and a difference of a specific gravity of petroleum in a container from a predetermined specific gravity, and a movement amount unit. Storing, the obtaining means using, as the predetermined specific gravity, an average specific gravity calculated from the specific gravity of petroleum stored in each container and the inventory amount in each container stored in the data storage means, The tank schedule creation support device according to claim 1 or 2, wherein a movement amount unit to be used for a combination of the target container and the target tank is acquired. 4. A tank schedule creation support used for creating an oil passage schedule when supplying petroleum stored in a plurality of tanks to a supply target device such as a petroleum processing device or a petroleum transport device. An apparatus, comprising: one or more tanks in the plurality of tanks, and set specifying means for specifying all sets that are a combination of tanks capable of supplying petroleum to the supply target apparatus; A parent oil schedule creating means that creates a list of all of the specified sets and stores it in a parent oil schedule storage means; and a parent oil schedule stored in the parent oil schedule storage means. By changing the order of the sets included in the set according to the specified rules, a predetermined type of child-passing schedule is created, A sub-passage schedule creating means for preparing a sub-passage schedule having the same contents as the pass-through schedule, and a set of sets actually used when each sub-passage schedule created by the sub-passage schedule creation means is used. Calculating a number, selecting a sub-oiling schedule with the least number of sets to be used, and storing the selected sub-oiling schedule as a parent oiling schedule in the parent oiling schedule storage means; If the predetermined stop condition is not satisfied when the parent oil schedule is updated by the parent oil schedule update means, the child oil schedule creation means is operated, If the condition has been satisfied, the information about the lip-oiling schedule stored in the lip-oiling schedule storage means is output. Tank scheduling support apparatus and a that stop control means. 5. A tank schedule creation support used for creating an oil passage schedule when supplying petroleum stored in a plurality of tanks to a supply target device such as a petroleum processing device or a petroleum transport device. A tank information storage means for storing the amount and specific gravity of petroleum stored in each tank, and a specific gravity condition which is a condition relating to specific gravity to be satisfied by petroleum to be supplied to the supply target device. A specific gravity condition specifying means for specifying, and each tank group comprising one or more tanks in the plurality of tanks and capable of supplying petroleums to the supply target device, using information stored in the tank information storage means. Specific gravity calculating means for calculating the specific gravity when the petroleum in the tank is mixed, and the specific gravity calculated by the specific gravity calculating means is the specific gravity specified by the specific gravity condition specifying means. The condition is satisfied tank group,
A set specifying means for specifying as a set used for supplying petroleum to the supply target apparatus; and a parent oil schedule which is a list including all the sets specified by the set identification means, and stores a parent oil schedule. Means for generating a pre-oiling schedule stored in the means, and a predetermined type of sub-oiling schedule by changing the order of a set included in the pre-oiling schedule stored in the pre-oiling schedule storing means in accordance with a predetermined rule. In addition, a sub-pass oil schedule creation means for creating a sub-pass oil schedule having the same content as the parent pass schedule, and a sub-pass oil schedule actually used when each sub-pass oil schedule created by the sub-pass oil schedule is used. The number of sets to be used, and select and select the sub-lubrication schedule that uses the least number of sets. A parent oil schedule updating means for storing the child oil schedule as a parent oil schedule in the parent oil schedule storage means, and when the parent oil schedule is updated by the parent oil schedule updating means, If the given stop condition is not satisfied, the child communication schedule creation means is activated, and if the stop condition is satisfied, the parent communication schedule stored in the parent oil schedule storage means is operated. A tank schedule creation support device comprising: a stop control unit that outputs information about an oil schedule. 6. A petroleum supply rate designating means for designating a petroleum supply rate, which is a daily amount of petroleum to be supplied to the supply target device, and a petroleum supply to the supply target device. A day condition specifying means for specifying a number of days condition for specifying the number of days, further comprising: a tank for which the specific gravity calculated by the specific gravity calculating means satisfies a specific gravity condition specified by the specific gravity condition specifying means. The group is specified as a set used for creating a schedule, and based on the information stored in the tank information means and the petroleum supply rate specified by the petroleum supply rate specifying means, the set is used by using each set. The number of days in which petroleum can be supplied to the supply target device is calculated, and the parent oil schedule updating means, each child oil schedule created by the child oil schedule creation means, Determine the number of sets actually used when using the oil passing schedule as well as the total number of days during which oil can be supplied to the supply target device,
From the child oiling schedules whose total days satisfy the day conditions specified by the day condition specifying means, the child oiling schedule with the smallest number of sets to be used is selected, and the selected child oiling schedule is communicated to the parent oiling schedule. 6. The tank schedule creation support device according to claim 5, wherein the oil schedule is stored in the familiar oil schedule storage means. 7. The oil pass schedule creating means is a list including all the sets specified by the set specifying means, and creates a plurality of oil pass schedules having different set orders from each other. The child oiling schedule creation means, which is stored in a schedule storage means, determines the order of a set included in the parent oiling schedule for each of the parent oiling schedules stored in the parent oiling schedule storage means. Creating a predetermined type of child oiling schedule by replacing according to the rules, creating a child oiling schedule of the same content as the parent oiling schedule, the parent oiling schedule updating means, the selected child oiling schedule, The stop control means is stored in the close oil schedule storage means instead of the original close oil schedule, If the stop condition has been satisfied, the information on the lip-opening schedule in which the number of sets actually used is the least among the plurality of lip-opening schedules stored in the lip-opening schedule storage means. The tank schedule creation support device according to claim 5 or 6, wherein the information is output. 8. A program recording medium on which a program for causing a computer to operate as the tank schedule creation support device according to claim 1 is recorded.